Firefox Private Network Install Issue

Hi All,
I was having an issue with getting the firefox browser to install..I discovered the reason why was due to a conflict with the AdGuard ad blocking software installed on my system. This morning I decided to try and install firefox again, this time I received a prompt from adguard stating that a certification needed to be reapplied..and did I want to do so. After doing that firefox is working normally, now I'm trying to get this : Firefox Private Network
installed, so far I haven't been able to do so . I'm receiving a connection error message. I'm enclosed a image of the message, I've tried everything I know to try on my end..such as making sure firefox is on the list of 'approved' site's in the windows defender firewall area. I've also posted a message the firefox private network support help site. Maybe some kind soul will have a workable solution for me.
Thanks,
David

The image is so small ýou need a microscope to read it. You can get add blockers for ff it may be worth removing others and use the addon