I re-entered Thailand on 21 Dec. 2023 so was due for 90-day notify by around March 21. I did annual renewal of Non-O retirement stay on March 6, if that makes any difference. Yesterday, March 9, I did online notification but today received email that it has been rejected with no reason stated, only "Please contact the nearest Immigration Office in person immediately."
What did I do wrong? This means I must now go to CW? How do I know what documents, if any, they need?
Thanks.