UPDATE: already moved my flight up 24 hours. Leaving this post if it helps anybody to know the Thai Embassy website allows 72 hour windows for changes.
Thailand Pass question: can I change my flight (to a day earlier) without getting a new pass? I can change the SHA+ to a day earlier but want to make sure I don’t risk not being able to use the pass. So basically can I still use my pass if I come on a different flight?
TLDR : Answer Summary
The user inquired about changing their flight to an earlier date while using their existing Thailand Pass, seeking confirmation that the pass remains valid. They found out that the Thai Embassy permits flight changes within a 72-hour window. Respondents shared their experiences: one confirmed that having multiple Thaipass QR codes did not lead to issues at entry despite the change, while another recounted difficulties faced at the airport due to not having the updated hotel certificate after a flight change.