wrong, Yes, you should keep the confirmation receipt for your TM28 report in your passport. You'll need this receipt when you visit Thai Immigration for issues like 90-day reporting or a stay permission extension.
Here's some related information about TM28 and TM30 forms:
TM28
This form is used to notify authorities of a change of address within a province. It's required for foreigners with a non-immigrant visa or extension of stay. You should file the TM28 within 24 hours of moving.
TM30
This form is used to report a foreigner's stay to immigration. It's required of all foreigners. Your landlord is responsible for setting up your TM30 and reporting your stay to immigration. You can submit your TM30 report online, by post, or in person at the immigration office.
Penalties
There are penalties for failing to comply with the TM30 regulations. Property owners who don't file a report face a fine of THB 2,000, while hotel operators face a fine of THB 2,000 to THB 10,000.
in my passport is a TM 28, no matter what's required it's still in there and yes, since the technology of computers which is only a new occurrence all information.recorded. yet they still check for.my TM 28 when I do my 90 day report.
it might help him communicate to his doctor actually, that could help. He might need a professional like you at his side. You know as I do they want to keep him here for $$$$. I was merely commenting to try and provide a solution and it sounds like you could.