What are the new rules regarding the use of Thaipass within the 72-hour window before flight?

The recent clarification on the Thai Pass stipulates that it can be used within 72 hours after the listed flight time. However, travelers cannot change their flight dates before obtaining their Thaipass. Confusion arose as some travelers faced issues at boarding due to misunderstanding these rules, particularly about entry dates and flight changes. Discussions in the comments explore further questions about how these timeframes function and what to do if flight schedules change.