This unstable WiFi started after the January Security Patch. I can connect to my home WiFi and can even see the IP dished out by the router dhcp, but no connectivity. Outside of a hard reset have tried everything. Restarting the router helps for a while but soon I get the WiFi icon with a small x at the bottom.
Following are some of the things I have tried.
1. I have reset the network settings.
2. Cleared the Google play cache
3. Safe boot
4. Restarting of the router.
Quick search tells me that its either a Oreo or on the Security Patch issue, so probably nothing to do with Nokia 8.