Unless you have a support contract with Avast! or whoever provides the paid support, I'm going to suggest you implement a workaround until the problem is resolved. More than likely, one group of remote help servers is having issues with it's configuration or is unreachable.
In your DNS, create a new zone file named rh.ara.avast.com and create a new host record, same as parent domain, and have it resolve to the working IP address. Flush your DNS cache, check you are getting the working IP when trying to connect to the rh.ara.avast.com