Unbelievable system!! I was at Chaeng Wattana on 4 and 25 November to get my yearly extension. On 25 Nov. I got my reentry permit as well. My 90 days notification window is between 27 Nov - 18 Dec. I could not do it in person on 25 Nov. at Chaeng Wattana. When I tried to do it online after 27 Nov, I was rejected twice. I was told first-time request of a 90 days notification after entering Thailand must be in person!! CAN NOT do it online or in the mail!!. 3x I have to go to Chaeng Wattana in a month!! 50km one way. By the way there is very hard to find parking around immigration. Their new parking lot is under construction of over a year!! Total non-sense. I do online TM30. If you go in person to report 90 days, have all these with you: TM47 form, passport pages copy, TM30 notification proof, lease/rent/condo ownership documents or if you live with your wife on her property (her ID card copy, her property documents, marriage certificate). They can ask all of these, some of these or none of these.