@Sha***
, now now, let's not scare monger :(
there's no jail or deportation for failure to file a 90 day report
The MAXIMUM you can be fined IF you're arrested and prosecuted for failure to have filed a 90 day report is 5K baht and 200baht a day up until you are current on your 90 day reporting. <-And FWIW; I have never ever seen or read of someone getting fined like that.