My guess (purely a guess) is that gab has been overwhelmed by a massive amount of people trying to sign up and it has overwhelmed their servers. Just yesterday the CEO said 600,000 people signed up in one day. It’s also possible the leftists have launched DOS (denial of service) attacks. I did get a message earlier today that they were offline for maintenance. Give it time and see what transpires.
We shall see what happens. The democommies are pulling out all the stops.