If I have to leave Thailand for more than 3 months and unable to report to immigration with the retirement visa, is that a problem? I mean if I will not report in 3 months cause I am overseas, will that be ok?
This is another very common question about your visa while outside of Thailand. Note that it is ok, because once you have left the country and entered back in Thailand, that is already considered as your Immigration reporting. And since you are on a 1-year extended visa you need to ensure that you have a re-entry permit in your passport before you leave Thailand or you will invalidate your visa once you leave.