I wrote an email to Immigration, which said that online wasn't working and to download app. However, my app store is US, not Thailand, and I got error message that I could not download the app in this country or region. Finally, I got a Thai person to download the app and help me file. Lots of wasted time because of the inability of Immigration to keep its site working. They should be embarrassed.

@Benjamin *****

Bangkok

Thank you! That is what I suspected.

@Tod ********

Thank you!

Absolutely sure that I did.

BUT, my due date was August 10. I submitted be mail (which was received by Immigration at Chaengwattana on July 24) and have never received a response. If the worst is a monetary fine, I will just wait to see if it shows up in the mail this month.

@Gu ****

If I have 7 more days, is there any reason I can’t wait for a few days to see if I hear from Immigration?

I appreciated all of the suggestions. I followed Anisa Ismail's advice (thank you very much!) and found that my information had been duly recorded. Needless to say, I made a screen shot and printed it out in case I ever have a problem about this with Immigration.