-snip-
It’s now been over two weeks, and I’m still locked out of my account, unable to access my balance of $1,339.08. I suspect that maybe using the same VPN location on both my desktop and MacBook might have flagged something, but I always used the same country I live in. Either way, I believe this accusation is unfair and not based on proper evidence.

VPN usage is not encouraged at Rollbit and you should understand that if you have read their ToS. And maybe because of this Rollbit restricted your account because they suspect potential multiple accounts, and other issues. If you have sent them an email, you can try to be patient waiting for their reply, it may take longer, but sometimes patience is needed because here you have violated their ToS. Hopefully your problem can be resolved quickly.