Udon Thani Immigration rejected my online 90 day report. The email, however, contained a correction for my address to facilitate a retry. Second attempt was successful.
Yeahhh! Udon Thani Immigration rocks.
TLDR : Answer Summary
The user's online submission for a 90-day report to Udon Thani Immigration was initially rejected but succeeded on the second attempt after receiving a correction for their address in an email. The positive interaction inspired other expats to share their favorable experiences with the Udon Thani Immigration office.