James Scillitoe the form is in both Thai/English. I just filled in all the spaces with red stars beside them. Took a photo of the house book and another one of my Thai mom’s ID card ( registered in her name as she owns the house). Make sure the files are under 1Mb. I just selected medium size. And submit. Works best if you use Chrome as a browser
Just left savannakhet this morning with a new non O. No problems entering Lao or Thailand at this moment. US passport. Temp check and fill out travel hisory form when leaving and again when entering Thailand. Nothing on the Laos side. But things are changing daily. I suggest you go ASAP