Let me share my experience from today. I completed the TDAC before leaving Canada on the 26th but should have done it at least 3 days before I guess but I mistakenly thought that it was within 3 days but when entering my departure date the system would not allow me to enter that same date nor the next day either so I simply put the first available option which was the 28th, same day as my arrival. Also for some reason the system did not allow me to enter an address even though I had one ready so I just left it blank and completed other required information. None of this seemed to be an issue as QR code received anyway and successful completion of TDAC indicated . And indeed they did ask to see it at Thai Immigration. Passport stamped for another 60 days. Edit: Iโm such an idiot, I just realized that the departure date they wanted was when I was leaving Thailand ๐ but because they ask the question before asking for arrival date and because it takes me 2 days to get here I just assumed it wanted the day I was leaving my country. So all that to say I made mistakes on my form and still got a QR code and still got into the country ๐
I have just entered for the 5th time as well since October and always for a month at a time. From what I read as long as you are flying in from a non neighbouring country of Thailand there is no limit to the amount of entries. If you enter by land there is a limit of 2 entries per calendar year.