Rea George. It's a long shot, but try sending a message through the Thai immigration Facebook page and ask the question whether you're still classed as being on an extension of your expired visa, or whether that is now completely forgotten. It might just be a curly situation that they don't even know themselves. I understand people have secured employment having been on the covid extension, and been able to obtain a non-B visa, so they must be familiar with the situation. Give it a try anyway, you have nothing to lose
@https://www.facebook.com/Immig******************************