Apparently the bank account info didn't transmit when we filed the original return because he neither owed tax nor was due a refund. He is a US citizen living in a third world country, is desperately poor and needs his COVID stimulus payment. The IRS agent I talked to said his check was mailed, then returned, and by accident the account was canceled, therefore he was unable to add bank account info. We couldn't use the IRS app for nonfilers because a return had already been filed. How can I fix this mess and get his stimulus payment direct deposited to his bank account, short of filing an amended return that fraudulently claims a refund?