Can’t access Zoom app or website from Mac

Hi,
I’m not able to connect with either the Zoom app or website on my Mac.  All my other apps and sites are working. I have Kaspersky but can’t see any settings that would prevent access to Zoom. It also has not been a problem previously. I’ve tried OS software update. I’ve tried uninstalling the app, but can’t reinstall due to not being able to access the site. Grateful for any ideas. Thanks