The post sounded like he came in on one flight and was stamped in then proceeded to Air Asia check in. Whatever they did sounds strange. Like the IO was making him blush he sounds nqr
You tell the story like a victim. So what any country that has a DTV is welcome in Thailand. Domestic flights in Thailand don't need to show a passport so what are you showing them Air Asia or any airline don't care about your visa just you have a valid ticket to travel.
The police check is not linked to your visa or any overstay. It is a crimnal check you have no police record in Thailand your ok. Is that what you are asking,??
exactly l was about to post the same. A right to know. You apply and wait. If you don't want to wait you are free ti go anytime. This DTV has become so popular the embassies cannot keep up with the processing it is not their fault.