Can't reach *account.battle.net | NET::ERR_CERT_COMMON_NAME_INVALID

Hello,

Since some time ago i found an issue with my bnet app - if I checked “keep me logged in” it returned an error every time I started the app. I worked around it by providing credentials everytime i start the app.

Today, I wanted to get my account information and found out that all my browsers return NET::ERR_CERT_COMMON_NAME_INVALID message and I pretty much can’t get into my account.

Funfact is that it works when I’m using my phone with wifi off (using my data plan).

Cleared the cache, tried google and cloudflare DNS config yet it still returns that error. Digicert also checks out that the cert is valid though not issues by any of their CAs.

Any hints how I could resolve that?