Show me ONE similar post that mirrors OP.
NO overstay.
NO criminal offense.
The OP can enter visa exempt.
If flagged at departure or upon arrival I would be amazed.
Alternatively enter eg Saigon and apply for tv at consulate.
Most likely a balls up at eVisa end.
Recently a chap had eVisa refused UK
Appealed and having already entered Thailand visa exempt had his appeal upheld and TV issued.
Current thread.