@George ******
many FB users are confusing the „visa validity“with the period of stay permit you get stamped into your passport when you ENTER Thailand using the Non-Imm-O visa.
*** the 90-days single entry Non-Imm-O Visa has a validity of 90 days, starting from the day it gets issued
This means, you will have to enter Thailand within this 90-days window, in order to ACTIVATE the visa!
You can enter Thailand only ONCE (“single entry visa”)
Once you enter Thailand using the Non-Imm-O visa, you will get stamped in for a 90-days stay permit
The visa itself becomes INVALID (“USED”) for further use, upon entering Thailand