Broadlink AC Integration (AC Freedom) (AUX, Dunham, Rcool, Akai, Rinnai, Kenwood, Tornado, Ballu)

I have a two docker installations "broadlinkac/broadlink_ac_mqtt] and [ghcr.io/artemvladimirov/broadlinkac2mqtt:latest] installed. Unfortunately they both won’t connect to the AC device (AC1 AUX AC Freedom).
I read about that you should stop (and delete the app) half way the wifi configuration process. I have tried everything. Even blocking url by using the firewall and DNS server (AdGuard).
Docker still refuses to connect to the AC unit.
Ping from docker works and finds the AC device.

With nmap i do get the following information back:

# nmap -sU -p80 192.168.1.34
Starting Nmap 7.94 ( https://nmap.org ) at 2023-06-14 13:39 CEST
Nmap scan report for 192.168.1.34
Host is up (0.40s latency).

PORT      STATE         SERVICE
80/udp    open|filtered http
MAC Address: EC:0B:AE:A6:80:4B (Hangzhou BroadLink Technology)

It seems port 80 UDP is open but filtered.
My question is if you all also experience this?
Must this port be completely open before it will connect?
Wondering of people who made it work wat their results are when a doing port check with nmap?

Thanks.

device info:

"Firmware":"v52020",
"Data Cloud":"Europe",
"SDK":"2.17",