If you can wait unit August, EVA will again (maybe) allow transit flights and you can fly to CNX via Taipei. Russian airspace being closed is causing a disruption in flight options and prices, I flew back to USA in early May via DOHA and the flights were full and the airport was jammed. Prices are about 50% higher than pre covid, maybe some moderation late summer but likely to remain high for a long time
You can still make it, contact one of the agents referenced on the groups. You will need to pay a fee, however since you have already applied they can fix your application in 24 hours. My Phuket Sandbox hotel provided me with a confirmation that listed my PCR Test Receipt number and hotel provided transportation, I believe this is a requirement for the Pass. Good Luck
I have a METV and yes it is good for 6 months plus 60 days. The only reason I got it was I did not want to deal with sending in my passport for separate single entry visas. Now however with the new E Visa you don't get a sticker in your passport, just a printout. You can apply for a Single Entry Visa while in Thailand and then fly out of the country to USA (maybe someplace closer) and then re enter on the new Visa. You can enter as often as you wish, however it is still a tourist visa, so you are limited to 180 days in country per year. Also don't forget you must provide 6 months of bank statements showing a min balance of $7000. The Single Entry Visa only requires a current Bank Statement.