How do I make avast remove URLs from URL:Blacklist?

Avast Free Antivirus / Premium Security
1

Yesterday I tried using avast one and it turned out that my friend’s website was affected. URL:blacklist as in the picture

https://i.imgur.com/EtCg0Ub.png

What do I need to do to fix this problem?

Memo
I have informed avira and crdf to remove the domain from suspicious URLs.

2
What do I need to do to fix this problem?
https://forum.avast.com/index.php?topic=14433.msg1289438#msg1289438
3

Since you give the url (just don’t make it active, no https) only the domain name and people here can check it against various sites. This can give pointers to why it may have been blocked.