Mate, I'm sorry but if you have to ask Facebook 'lawyers' then stop, NOW! Talk to a proper legal expert or you will get rogered 6 ways from sunday. I'm aghast you would ask this sort of question on here!
I had one rejected and was told if I submit it online within 7 days of expiry date I have to attend immigration in person. I set an alarm 2 weeks before now and no online rejection since!
I keep a cheap UK phone account active (6 pound a month on giff gaff) to do all my UK banking and transfers to Thailand via Wise. When I log in it says something like "this is your registered device so connecting automatically", never asked for authentication code!
He asked for an opinion, I gave one. Plenty of stories of people being ripped off or in trouble for using a dodgy one! If you found a good one, put a link.
How do you know they will do it properly? I'm sure there are some good ones out there but do you want to risk being removed from the country because you found a crap one!
Got varifocal lenses put into my old frames late last year, 24,000 baht if I remember correctly. My chemist, lovely Indian fella in Ubon, said he gets his from India for a lot cheaper price and has said he'll take my prescription, and another old frame, and get me a pair next time he goes home!
I use a family members address and have 3 bank/building society accounts. None of them told me I'd need to close them. I transfer money from pension into them monthly to keep them active. Also pay £6 monthly for cheapest GiffGaff sim in UK phone.