If you need the 30 days, then get the ED cancelled first, but as Robert says it cab only be used for 1 entry anyway....not sure where you would border bounce though......options are slim..

As Robert says. Safest option is to fly back to your home country UK

Did you see the 🤣🤣🤣 at the end of his comment ;) Nobody in their right mind should be travelling to China. It will put you on just about every blocked list there is :(

Why would anyone want to be going to China at the moment...?

You may have to fly home to Canada.

Put 400k in an account and go for the year long extension.

I don't mean to pry, but if you have a million baht and are 61, why not just put 800k in a bank and live off the 'retirement' extensions (yes yes I know not the right term, but commonly referred to as this) for the next 20 years at 1900 baht a year. That would be 38k baht instead of a million. Especially considering that a lot of people don't live until 81.

A new passport could help with a visa application.

As far as I know, that is not correct. There is no penalties for children under 15. I believe that includes fines or overstay stamps. So in other words a child does not need a visa at all until 15.

Just get elite for yourself for 5, 10 or 20 years..... Don't need a visa for a baby or child. ;)