Avast VPN is blocking HTTP://USPS.com

Hello,
   When I turn on Avast VPN, it blocks HTTP://USPS.com.
This happens on multiple browsers. The error is…You don't have permission to access this page If you have found this page in error, please contact support Reference:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
(X=numbers).
When I turn Avast VPN off, it loads fine. This happens on all server connections with multiple browsers.
I tried adding the website to the exception list, but was no help.

Hello Pat.
We're glad to clarify this for you.
Even though Avast has acquired AVG, both of them are entirely different enterprises. Both AVG & Avast have different support teams & community forums.
Please click on this link (https://forum.avast.com/) if you wish to visit the Avast community forum for further help on the above issue.
Let us know if you have further queries.

Hello Pat.
We're glad to clarify this for you.
Even though Avast has acquired AVG, both of them are entirely different enterprises. Both AVG & Avast have different support teams & community forums.
Please click on this link (https://forum.avast.com/) if you wish to visit the Avast community forum for further help on the above issue.
Let us know if you have further queries.