Malwarebytes blocked Avast as malicious website?

I get a repetitive pop up window reading;
Malwarebytes anti-malware
Malicious website blocked
Domain: su2.ff.avast.com
ip: 92.242.140.21
Port: 55878 (This number changes)
Type: Outbound
Process: C:\Program Files\Alwil Software\Avast5\AvastSvc.exe

What is it and how do I stop it?

Similar question has been posted here in a different section of this forum. More info is here https://forum.avast.com/index.php?topic=176230.0

A reply to the question was actually given by Avast here:
https://forum.avast.com/index.php?topic=176229.msg1250717#msg1250717

Thank you. I searched but could not find those.