Daikin WLAN adapter BRP069A41 a few minutes after it was turned on loses connection with app ONECTA 3.9.3-16181 30900020

In July 2021 I bought a Daikin WLAN adapter model BRP069A41 to connect it to my air conditioner.
It worked fine until october 2022, whn it starteg giving me problems.
the situation is the following:

From my Daikin app “ONECTA” , I often (almost always) see the Daikin adaptor offline.

I tryed to reconfigure the device connection with my home network, but nothing changes:
In the first minutes after the reconfiguration, the ONECTA app can reach my air conditioner and manage to run some remote commands on it, but after a while the connection goes down.

Did anybody already encounterd this problem and foud a way to fix it?

some context:

My daikin air conditioner model: FTXM35M2V1B.
My Daikin WLAN adapter model (from the label on the back of the adapter): BRP069A41
My Daikin WLAN adapter network gateway model (from app ONECTA > network gateway info): BRP069B4X
My Daikin WLAN adapter network gateway firmware (from app ONECTA > network gateway info): version 1_14_68
My ONECTA app verison on my mobile: version 3.9.3-16181 30900020

The adapter "RUN" LED light is steadily turned on, in orange color.
Other domotic devices in my house are fairly reachable by the relative apps installed on my phone.
From the administrator webpage of my modem , I can see the daikin-adaptor connected to the network with is IP assigned.
I made no changes to my wifi settings between the time when the adapter worked good every day and the time when it started going offline.
Maybe something has gone wrong with the latest firmware download on the adapter, but I have also returned the adapter to the factory conditions and now still has problems.

The modem is running a wi-fi connection with the following parameters:

The modem is not connected by cable to any internet connection, it has a phone sim plugged in, so the internet-in is wireless.

operation mode: 3g/4g router mode
802.11bgn mixed 
security : WPA/WPA2 
frequency : 2.4 Ghz 
channel : autodetermined 
modem model: TP-Link archer 300
wifi SSID and password: no spechal characters, only letters and numbers

modem speed:
Testing download speed................................................................................
Download: 20.27 Mbit/s
Testing upload speed......................................................................................................
Upload: 14.82 Mbit/s

I have run the diagnostic tool from ONECTA app, and the strange things I see are:

######################
udp_results.txt
######################

------------------------------
2022-12-04 20:06:10.315 - Time server response
------------------------------
date=2022/12/04,time=19:06:11




------------------------------
2022-12-04 20:06:11.704 - UDP basic info
------------------------------
[2022-12-04 20:06:11.731] ******: ret=OK,type=aircon,reg=eu,dst=1,ver=1_14_68,rev=C3FF8A6,pow=1,err=0,location=0,name=%44%61%69%6b%69%6e%41%50%37%36%31%31%39,icon=0,method=polling,port=30050,id=b83a440d-7df4-422c-9612-efbb6dacd3d3,pw=,lpw_flag=0,adp_kind=3,pv=3.20,cpv=3,cpv_minor=20,led=1,en_setzone=1,mac=*******,adp_mode=run,en_hol=0,ssid1=TPLINKTMS,radio1=-51,ssid=DaikinAP76119,grp_name=,en_grp=0




------------------------------
2022-12-04 20:06:20.163 - HTTP data of adapter 1/1 at ******
------------------------------
GET /aircon/get_control_info
ret=OK,pow=1,mode=4,adv=12,stemp=19.5,shum=0,dt1=25.0,dt2=M,dt3=25.0,dt4=19.5,dt5=19.5,dt7=25.0,dh1=AUTO,dh2=50,dh3=0,dh4=0,dh5=0,dh7=AUTO,dhh=50,b_mode=4,b_stemp=19.5,b_shum=0,alert=255,f_rate=B,f_dir=0,b_f_rate=B,b_f_dir=0,dfr1=5,dfr2=5,dfr3=5,dfr4=B,dfr5=B,dfr6=5,dfr7=5,dfrh=5,dfd1=0,dfd2=0,dfd3=0,dfd4=0,dfd5=0,dfd6=0,dfd7=0,dfdh=0,dmnd_run=0,en_demand=0
GET /aircon/get_day_power_ex
ret=OK,curr_day_heat=1/0/1/3/0/0/2/3/1/0/1/3/2/2/1/2/2/2/1/2/0/0/0/0,prev_1day_heat=1/1/0/0/0/0/3/2/0/0/0/2/2/2/1/0/0/3/2/2/2/2/0/0,curr_day_cool=0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0,prev_1day_cool=0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0/0
GET /aircon/get_demand_control
ret=OK,type=1,en_demand=0,mode=0,max_pow=100,scdl_per_day=4,moc=0,tuc=0,wec=0,thc=0,frc=0,sac=0,suc=0
GET /aircon/get_model_info
ret=OK,model=0000,type=N,pv=3.20,cpv=3,cpv_minor=20,mid=NA,humd=0,s_humd=0,acled=0,land=0,elec=1,temp=1,temp_rng=0,m_dtct=1,ac_dst=--,disp_dry=0,dmnd=1,en_scdltmr=1,en_frate=1,en_fdir=1,s_fdir=3,en_rtemp_a=0,en_spmode=7,en_ipw_sep=1,en_mompow=1,hmlmt_l=10.0
GET /aircon/get_monitordata
ret=OK,mondata=pv=3.20,cpv=3,cpv_minor=20,mac=************,fan=303538,tap=42,mode=34,pow=31,rawrtmp=2b323235,humid=ff,trtmp=2b323230,fangl=2b303337,hetmp=2b323935,itelc=3030303030364146,eepid=30303030,cmpfrq=303132,otmp=2b313030,gx00=3434,gx01=3446,gx02=30303032,gx03=3441,gx04=3430,gx05=3030,gx06=30303043,gx07=30303643,gx08=00000000,gx09=46464646,gx0A=37364236,gx0B=3032,gx0C=3030
GET /aircon/get_sensor_info
ret=OK,htemp=22.0,hhum=-,otemp=10.0,err=0,cmpfreq=12,mompow=2
GET /aircon/get_week_power_ex
ret=OK,s_dayw=0,week_heat=29/25/16/19/7/6/8/1/4/1/1/21/12/0,week_cool=0/0/0/0/0/0/0/0/0/0/0/0/1/1
GET /aircon/get_year_power_ex
ret=OK,curr_year_heat=0/0/0/0/0/0/0/0/0/0/76/89,prev_year_heat=0/0/0/0/0/0/0/0/0/0/0/0,curr_year_cool=0/0/0/0/0/0/0/0/0/0/14/0,prev_year_cool=0/0/0/0/0/0/0/0/0/0/0/0
GET /common/basic_info
ret=OK,type=aircon,reg=eu,dst=1,ver=1_14_68,rev=C3FF8A6,pow=1,err=0,location=0,name=%44%61%69%6b%69%6e%41%50%37%36%31%31%39,icon=0,method=polling,port=30050,id=b83a440d-7df4-422c-9612-efbb6dacd3d3,pw=,lpw_flag=0,adp_kind=3,pv=3.20,cpv=3,cpv_minor=20,led=1,en_setzone=1,mac=************,adp_mode=run,en_hol=0,ssid1=TPLINKTMS,radio1=-51,ssid=DaikinAP76119,grp_name=,en_grp=0
GET /common/get_datetime
ret=OK,sta=2,cur=2022/12/4 20:6:22,reg=eu,dst=1,zone=313
GET /common/get_info
ret=OK,RemainingCount=1440
GET /common/get_network_setting
ret=OK,auto_ip=1,auto_dns=1,ipaddr=,netmask=,gateway=,dns1=,dns2=,use_proxy=0,proxy=,proxy_port=0
GET /common/get_regioncode
ret=OK,reg=eu
GET /common/get_remote_method
ret=OK,method=polling,notice_ip_int=3600,notice_sync_int=10
GET /common/get_servername
ret=OK,ServerName=dx23.prod.unicloud.edc.dknadmin.be
GET /common/get_wifi_setting
ret=OK,ssid=TPLINKTMS,security=mixed,key=,link=1
GET /common/get_wififw_version
ret=OK,w_ver=w8845-R0, RF878X, FP76, 14.76.36.p103
GET /common/get_wlanregioncode
ret=OK,wreg=4
GET /config/adapter/datetime
ret=PARAM NG,msg=404 Not Found
GET /config/adapter/err_info
ret=PARAM NG,msg=404 Not Found
GET /config/adapter/product_info
ret=PARAM NG,msg=404 Not Found
GET /config/adapter/user_info
ret=PARAM NG,msg=404 Not Found
GET /config/firmware/info
ret=PARAM NG,msg=404 Not Found
GET /config/wlan/settings
ret=PARAM NG,msg=404 Not Found
GET /debug/get_fwupdate_history
ret=OK,MCU_FW_INFO=1,
Latest=Success date:2022/08/08 21:35 tsync:SERVER header:465720557064617465732077697468206e6f2068656164657200ffffffffffffffffffffffffffffffffffffffffffff
,WIFI_FW_INFO=1,
Latest=No Data

#######################
dx3_error_counters.txt
#######################

------------------------------
2022-12-04 20:06:18.480 - Error counter for: DaikinAP76119 (****** - ****7)
------------------------------
Full adapter info: {"adp_kind":3,"apSSID":"DaikinAP76119","cloudConnected":true,"discoveredAt":1670180771759,"firmwareVersion":"1_14_68","hasError":false,"host":"******","ipAddress":"******","mac":"**************","model":"wlan-dx3","name":"DaikinAP76119","revision":"1_14_68","trackingId":"BRP069B4x_**************"} 

ret=OK,AdpCurTime=2022/12/4 20:6:18,TSyncErrReset=103,TSyncErrResetTime=2022/12/04 14:03:57,RouterDisconn=74,RouterDisconnTime=2022/12/04 20:03:34,PollingErr=115699,PollingErrTime=2022/12/04 20:03:39,TimeSyncErr=365,TimeSyncErrTime=2022/12/04 19:43:34,DhcpErr=0,DhcpErrTime=----/--/-- --:--:--,DnsErr=5894,DnsErrTime=2022/11/09 15:00:00,SockErr=0,SockErrTime=----/--/-- --:--:--,TlsErr=2,TlsErrTime=2022/12/01 04:26:17,ConnNoRouteErr=98,ConnNoRouteErrTime=2022/12/04 20:03:39,ConnTimeoutErr=0,ConnTimeoutErrTime=----/--/-- --:--:--,ConnResetErr=0,ConnResetErrTime=----/--/-- --:--:--,ConnOtherErr=110070,ConnOtherErrTime=2022/12/04 20:03:28,COErr1=12,COErrCnt1=109934,COErr2=113,COErrCnt2=136,COErr3=-,COErrCnt3=0,COErr4=-,COErrCnt4=0,COErr5=-,COErrCnt5=0







------------------------------
2022-12-04 20:06:49.192 - Error counter for: DaikinAP76119 (****** - ****)
------------------------------
Full adapter info: {"adp_kind":3,"apSSID":"DaikinAP76119","cloudConnected":true,"discoveredAt":1670180771759,"firmwareVersion":"1_14_68","hasError":false,"host":"******","ipAddress":"******","mac":"**************","model":"wlan-dx3","name":"DaikinAP76119","revision":"1_14_68","trackingId":"BRP069B4x_**************"} 

AbortError: Aborted
NOT_SUPPORTED







------------------------------
2022-12-04 20:07:49.252 - Error counter for: DaikinAP76119 (****** - *******)
------------------------------
Full adapter info: {"adp_kind":3,"apSSID":"DaikinAP76119","cloudConnected":true,"discoveredAt":1670180771759,"firmwareVersion":"1_14_68","hasError":false,"host":"******","ipAddress":"******","mac":"**************","model":"wlan-dx3","name":"DaikinAP76119","revision":"1_14_68","trackingId":"BRP069B4x_**************"} 

AbortError: Aborted
NOT_SUPPORTED