@sandy55,
OK you have now declared you have a paid version of Avast AV. Is your VPN also Avast or another provider?
The VPN should provide you with a secure pipe to the internet over your shared network and avoid possibility of local snooping.
If you have Avast Firewall in use with your paid version, as you are on a shared network, then you probably need to have that set to "Public". That setting is more restrictive (e.g. for use on public wifi etc), so you may encounter more website connection problems with this setting rather than the less restrictive "Private" setting suggested for most home users.
Also what Windows operating system are you using e.g. Win10 2004 or other.
Without a screenshot of problem you are seeing, then it is difficult to understand your problem or problems and to help you.
You can attach your screenshot files using the "Attachments and other options" link under the text box.