OK, please contact support so they can communicate with you about the issue.
Also, can you clarify your wifi router / access point settings? In case it is just a weak signal can you place it physically close to the AP to check? If you can look at the router wifi settings, is it 5 Ghz only, or 2.4 Ghz also? And what authentication protocol? (wpa2, wpa3, etc.)
Ich tried different routers also with 2.4 GHz but it seems that the tablet not even search for a network. When ich switch on WiFi there is no loading animation and the title says WiFi is off. When I close the popup and open it again WiFi is on but not networks.
On my phone I can see several networks and get a search animation on top of the popup.