What is the process and timeline for submitting the TM47 online 90-day report in Thailand, especially regarding late submissions?

This post shares a recent experience with the online submission of the TM47 90-day report, highlighting that it was submitted after the typical 90-day period (98 days late) but was approved quickly within one day. Comments suggest that while some users have had success with late submissions, it's advised to stick to the standard submission window of 14 days before the due date.