From the message it seems like your (rekeyed wallet address) is no longer rekeyed to (my auth address)
Check if this is the case on Pera, or look it up on an explorer to confirm its rekey status.
E.g. Allo Info will show
Type [ Regular Account ]
State [ Rekeyed ]
FYI rekeying “disappears” if you close out an account, i.e. take the balance all the way to zero - this may be what happened here.