I currently have a website running on a DigitalOcean for bergenmakers.no. Setting up certificates worked well.
There’s subdomain mail.bergenmakers.no that is served by yandex.com through their Yandex.Mail for domain.
After adding certificates I can’t reach mail.bergenmakers.no anymore. Chrome, Safari and Firefox say that my connection is not private.
All of them point out that domain uses HSTS, but that didn’t help me to find answer to my problem.
Did anyone have this problem? maybe with GSuit/Google apps for domain?