in the app go to the insurance and print it out. I used it with the London embassy in December and all was ok. Many others have used since. My trip was 90 days so it fitted perfectly. The insurance is an annual policy with multiple 90 day trips
Revolut premium cards have free insurance that covers COE. Emirates free insurance also covers COE. Emirates can cover upto 365 days max or your return date whatever is sooner
it comes with the premium cards along with other benefits. The most expensive card is £120 per year and covers multiple trips upto 90 days per trip. So still far cheaper than Thai covid insurance