@Sebastian ********
once again to make it clear , if you leave Thailand and you would like to return (if you can) you need a medical certificate that youâre fit to fly and that you show no signs of C-19 infection + an insurance that covers up to 100.000$, including Covid-19.
The insurance that you mention can only be used when youâre living inside Thailand. Canât be used to enter the country again once you have left.