Trying to look at the site/password list itself just enters a loading loop for eternity.
It is a known problem and should be fixed in the next update.
There is bug that's causing UI slowdown, when you have a lot of passwords. But if you don't use the UI and just the plugin in browsers it should work fine. We will fix this in next release.
But seeing I have paid for the software and it’s not working properly for the passwords does this mean there is a rebate?
Just hope the update comes soon.
It’s out already: https://forum.avast.com/index.php?topic=182468.0
I can confirm it’s fixed 
Even browser plugin seems to work and fill passwords much faster now 8)
I am having this problem now too. I can see the list of sites, but when I try to go to the detail view of any of them, it just says “loading” and spins endlessly. I’m running Windows 10 with Avast Premiere version 18.4.2338.
Are you really still using EasyPass…?? If so, it’s not supported anymore.