Get a tourist visa before entering Thailand which is good for 60 days then you can get a 30 day extension and not need to do a border run which at the moment you can’t do anyway.
If you intend to stay longer than that I’d suggest an education visa.
I used Microsoft Edge as the server and didn’t have to do any of this and it took less than 20 minutes to complete. Also need to make sure all files are JPEG as PDF won’t upload.