UPDATE WE GOT HIS ACCOUNT BACK AND FC HOUSE IS INTACT!! Thank God in Lord Jesus Christ's name AMEN!

We're SO thankful to everyone here who was helpful and supportive. It was my same dumb husband that had the brilliant idea to do an emergency OTP removal through the support website. I didn't even think to suggest that b/c I figured we wouldn't be able to get into the account to apply the serial code given. They stole all the gil, but jokes on them - we're poor anyways LOL

I'll update my OP, thank you thank you thank you! <3 <3 <3 /cry