Let's Debug

Test result for mtg.perpetum-mobile.ru using http-01

No valid A or AAAA records could be ultimately resolved for mtg.perpetum-mobile.ru. This means that Let's Encrypt would not be able to to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.

Submitted May 2 13:43:43 2022. Sat in queue for 53ms. Completed in 6s. Show verbose information.