Fund Disappeared in Live Account?

I transferred 30k from my bank account to my Alpaca account recently, but the cash just disappeared a few days later with “ACATC” status shown on the Account Activities page. On the Account Activities page, it shows something like this:
Deposit +30K

I assume “ACATC” means account activity? But I actually did nothing after the first initial transfer. Does any here have experience? What does this mean?

Support should have contacted you and gotten this resolved. There was an issue with the ACH deposit which made the funds unavailable.