8109630762 All signal values are OK. We can’t find anything that explains your error. It is noticeable that most of the devices are connected via LAN 3. I recommend using LAN 4 here, as this has 2.5Gbit in the download.
If the network instability persists on the WIFI side, please wait until you have received and installed the extender and get back to me. If it is not the WIFI, we would appreciate more information such as which device, how exactly you determine this, etc.
Greetings
Daniele