For those with the server lock bug, here is a potential solution that worked for me temporarily.
Have the game window closed and go to this link - https://dev.reviveheroes.com/servers
Select a sever making sure your intended faction has space on the sever.
Launch the game as you usually do.
When you hit play, it should automatically reroute you to the selected server from the list and not the mostly empty one you were locked into.
Let me know if this worked,