iOS Unable to Verify Account Information

[graybirds]

iOS 14.4.2
When I try to manually add to my calendar subscriptions:
1.) it says “Cannot connect using SSL” (so I try without) then
2.) it says “Unable to verify account information.”

From your website, when I click the System Calendar button, it says
1.) “the connection to eventcal.flown.io is not secure- do you want to continue?” ( I do)
2.) then it says “could not subscribe to the calendar “/“ from eventcal.flown.io”

[simonbengtsson]

Interesting. Could reproduce on my iPhone as well. No idea what this could be about. Until someone finds a solution a workaround is using desktop browsers.