Insurance with COVID-19 Coverage (URGENT)

I am due to leave Taiwan in 3 weeks. I got a job offer in Thailand to teach there.
However, in order for me to get my visa into Thailand, I need to have a Certificate
of Entry. One thing I need to have for my certificate of Entry is an insurance policy with
coverage of no less than US$100,000, and an indication of coverage for COVID-19.
I would love to use World Nomad Insurance but I question their policy. So which insurance
company can I go online to buy insurance that can give me coverage for COVID-19?

I use Cigna, cheapest tier is 1M insurance policy, goes up to unlimited