I live in BKK and got a new passport mid 2020 which so far has no entry stamp
I was able to do a 90day report online once with my new passport still on the old system
all later ones were rejected and I had to report by registered mail
But I always try online before I send by mail
Registered and tried the new system in December, rejected
Report was due and I tried again yesterday, APPROVED !!!
No idea why, I always enter exactly the same detail