Less than 5 hours after I passed through Immigration on my return to Bangkok last Monday, I went to my online account to fill in the TM30. Since there was no "Submit" button, I hit "Save", but my information seems to have been erased. I then reentered my information and, since there was still no "Submit" button, I hit "Save" again, with the same result that my information seems to have been erased. I don't know if hitting the "Save" button resulted in the submission of the online form, or whether my efforts proved to be for naught. In any case, I have not heard anything from Immigration by snail mail or email. Thoughts?
TLDR : Answer Summary
The user experienced issues with the TM30 online submission after returning to Bangkok, where saving their information did not seem to record their entry. Several comments offered troubleshooting steps, including checking for data via a search function in the system, using different browsers, and avoiding translation features that might disrupt the process. Ultimately, the user was able to confirm that their information was recorded by following user advice and taking a screenshot for reference.