iPad won’t connect to some apps online iPad Pro (11-inch) (2nd generation) on 14.2 (18B92) gives a &quot;cannot connect&quot; error on many apps, but not all.
It will connect to:

Local WiFi.
Stack Exchange.
Mail.
Safari.
App Store.

It will not connect to:

Facebook
Covet
Ookla Speedtest
Merge Mansion

or even Apple Support (see error below).

Any suggestions why some apps see the Internet and some don’t?
Already tried:

Reset WiFi on iPad.
Reset Network Settings on iPad.
Reset Xfinity Gateway.
Power down and restart iPad.
Removed the VPN that she did not remember installing and the problem went away.