The tax department better think this through. It could bite them in the ass when ex-pats leave because they can't afford to stay in Thailand and they take their money elsewhere.
In health classes, I was taught that masks do not work. The bacteria/germs are smaller than the weave of the mask and penetrate the space left open during the manufacturing of the mask. The exception is the surgical mask.
I had a Capital One account for 10 years and lost money with other problems. Switched to Schwab and started making money. Schwab is much easer and safer with free trading.