Well after checking the prices and thinking about possibly needing proof when I actually enter Thailand (or if the airline wants proof too) I decided to book a side trip that I can cancel later if I for some reason do not get an extension this time.
Don’t want to be accused of making up my own rules now do I.
The Thai number doesn’t interfere with the app as far as placing and receiving calls as long as it is active but for some reason I was not able to get texts on the phone unless I was on the website.
I want to add that as much as I like GV it does glitch sometimes.