When I tried to look up our case myself last year, it seemed the system to do so was only accessible by people registered as working in the PT legal profession.
If you filed against AIMA last July there were probably 30-40,000+ other suits ahead of you at the time. So it’s quite possible your case would still be stuck today anyway. Last stat I saw was January 31st of this year, where there were approximately 50,046 pending AIMA subpoenas.
It would appear the law firm you used still exists. I’d suggest asking for your money back - and maybe that’s for the better anyway.