Probably not the switch, probably a leak in the bladder of the holding tank or leak in the down pipe to the well, depending on what kind of system you have.
On Sukhumvit road in Bangkok today every motorbike taxi passenger I’ve seen isn’t wearing a helmet, and many drivers aren’t either. Not a cop in sight.
I’d try the wire transfer to your friend’s Thai bank with a SWIFT code. I’ve only sent money to myself that way, but it works well, is fast, and secure. Ask your EU bank about it.
I’m not putting out false hope, just because you don’t believe it. I reversed mine and I’ve had a normal A1C for 3 years, I know what the truth is. If you want to rename it “remission”, I don’t care, but mine is gone. Kaput. History. Never coming back because I’ll never stop eating this way.