No more endevice pairing after moving from Sonoff USB3 to Syconnect

[dakacla]

Hello everyone ,
I switched from a Sonoff V2 P usb3 key to skyconnect in ZHA.
I had 46 devices with the Sonoff and after 25 routers with the Skyconnect the pairing of the end devices did not complete .
Any suggestions for directions?
I am in the latest HA and ZHA software versions.

System Information

version	core-2024.6.4
installation_type	Home Assistant OS
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hassio	true
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python_version	3.12.2
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os_version	6.6.33-haos
arch	x86_64
timezone	Europe/Paris
config_dir	/config

Home Assistant Community Store

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GitHub Content	ok
GitHub Web	ok
GitHub API Calls Remaining	5000
Installed Version	1.34.0
Stage	running
Available Repositories	1394
Downloaded Repositories	38

Home Assistant Cloud

logged_in	true
subscription_expiration	9 mai 2025 à 02:00
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relayer_region	eu-central-1
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remote_server	eu-central-1-12.ui.nabu.casa
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Home Assistant Supervisor

host_os	Home Assistant OS 12.4
update_channel	stable
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agent_version	1.6.0
docker_version	26.1.4
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healthy	true
supported	true
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supervisor_connectivity	true
ntp_synchronized	true
virtualization
board	generic-x86-64
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Dashboards

dashboards	5
resources	24
views	33
mode	storage

Recorder

oldest_recorder_run	16 juin 2024 à 11:15
current_recorder_run	24 juin 2024 à 16:41
estimated_db_size	612.61 MiB
database_engine	sqlite
database_version	3.44.2

[Hedda]

What do you mean by “USB3”? Regardless of adapter model they are all USB 2.0 and should not be connected to USB 3.0 port because that is well known to cause interference issues. Connect the dongle via a long USB extension cable that is USB 2.0 or connect to a USB 2.0 port (not a USB 3.0 cable to a USB 3.0 port), otherwise interference can block/jam reception. That and more is covered by the related best practice tips here that you need to read and should take actions to try to follow:

Zigbee networks: how to guide for avoiding interference + optimize using Zigbee Router devices (repeaters/extenders) to get a stable mesh network with best possible range and coverage

Who is this guide for? I have tried to make this guide to be a comprehensive collection of the most basic yet essential tips with a set of actions and best practice steps that should be applicable to all types of Zigbee setups, regardless of what type of Zigbee adapter/gateway/hub/bridge/devices that you are using. This guide is meant for both those who are new to Zigbee as well as those who been using Zigbee devices for years but might not been aware of the underlying prerequisites to optimiz…

[dakacla]

Thanks for taking some time to answer :-).
As I have only USB3 port I use an USB extension.
Yesterday i migrate from the Skyconnect to my previous Sonoff V2 P and the channel (Zigbee 25 , Wifi 12) change from 93% to 75% of use.
But still no pairing .

Somebody told me today to use a Sonoff V2 E with latest firmware as Aquara device are know no to be very conform to Zigbee 3 standard.

And as I have also Sonoff V2 E and that my connection lost began few times after bougth and add Aquara devices I’ll try this asap .