So here's a strange one. I do my 90-day report online.

I did some shopping in Tachileik in June and have a Landing Card in my passport stamped 28 JUN 23.

But I got an email reminder from Immi saying:

"Your receipt for notification of "STAYING LONGER THAN 90 DAYS" will be due on 23/08/2023."

.... which was my due date 90 days from my PREVIOUS arrival.

So I duly submitted a report and it got rejected (very nicely I thought) with:

"This is too early. Start counting 90 days from the date of arrival."

Since I'm flying out of Bangkok on the 23rd, I'm not worried about it per se, but it does show that there is a bit of a disconnect between the two systems.....