Just for future reference regarding the TM 6 card . Sakhon Nakhon immigration requires to see a new TM6 card within 48 hours. And notification of the address you would be staying .
I done my 90 day report today and I asked the question about the TM6 card
Plus I tried to do my 90 day online but it didn't work just kept saying pending . So I asked the question about the online reporting his reply was sometimes it works sometimes it don't
TLDR : Answer Summary
In Sakhon Nakhon, immigration officials require a new TM6 card to be presented within 48 hours of arrival, along with notification of your place of residence. Users have reported issues with online 90-day reporting, where the system may show as 'pending'. It has been suggested that updating the TM30 form with your new arrival date and the TM6 card number may also be necessary.