Cannot access webmail.plus.net

[#1]

As subject - I've been able to access my emails at webmail.plus.net until today. Now in Firefox I'm getting "Secure Connection Failed <...> PR_END_OF_FILE_ERROR" with similar in other browsers including laptop and mobile.

Any idea what's going on?

[#2]

I've heard of no other reports and seems to be working here.

To confirm, is this the front screen or after log in? 

[#3]

None of my browsers will load the page. I think it's most likely an Adguard DNS issue, will post back here.

[#4]

This turned out to be an AdGuard problem. The webmail portal has now been removed from AdGuard's database.