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: BRP069A41
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