Over the last two months I have been traveling extensively and have had major issues with iOS 14 and public WiFi and hotspot from my phone to my 10.5 inch iPad Pro. User Darn1 found that deleting all VPN profiles did the trick and I can confirm that deleting my VPN app immediately corrected my WiFi issues on the 10.5 inch iPad Pro. To be clear I was not attempting to use the VPN, simply having a VPN profile installed in my iPad was enough to cause major WiFi issues. I am running 14.3, but had been having issues since the initial iOS 14 release.