I got fully vaccinated at Bangkok around September, back to Malaysia got passport renewed... i need advice how to update my New Passport No. to my Thai vaccination certificate. I try update my new passport no. in MorPromt App and successful but it doesn't update the Vaccine Certificate which i need to use to apply for Thai Pass... If i use the Vaccination cert with old passport no. for Thai Pass would there be any problem? Thank you guys need some guidance :)

Entered the country with a valid SETV in an old passport. Handed over both passports (new and old). No problems. It just occurred to me whether I have to inform immigration about the new number or can I just wait until my time of extension. Thanks.