Thought I'd mention that today is the 15 day mark to my 90 days report being due so I decided to try the online reporting system.
I logged in using the current release of Firefox, I had to acknowledge the lack of security certificate on the immigration website, agree to the terms, fill in my data (which includes a new address since the last time I had to report...like a year ago).
I printed the pending receipt at 9:50 am and received the approval email at 2:23pm.
Super easy and extremely fast. Best of all no need to drive to CW and find parking. :)
TLDR : Answer Summary
An expat shares their positive experience using the online system for the 90-day report in Thailand, noting ease of use, speed, and convenience compared to visiting the immigration office. The process involved logging in despite security certificate warnings, entering updated personal information, and receiving timely approval, highlighting a modern solution for reporting residency.