I use only VPN services that are credibly "non-logging," so that traffic analysis cannot be done.
Since WhiteWorkinClassScapegoat was able to log-in obviously Gab has only been able to recognize and block certain VPN services, but not others.
WhiteWorkinClassScapegoat, are you using a static IP VPN? That may be a work-around, but I avoid using a static VPN.
I just did some jukin' and jivin' and here are the results:
The VPN I use to login and post on Gab has "on and off" option, so I'm not sure if that's the same as "non-logging". I don't actually login with a username and password to use that VPN there. I tried another VPN where I actually login with a name and password but that one gets denied by Gab.