Getting the same errors as @Cynitec below.

This add-on needs to be updated, big time!

The last update was (as of today) 7 months ago, so I think this is the problem.

I may have to cancel this if they can't get a newer version released.

Almost useless. I regularly have to switch server because the connection just stops working, and now I'm getting the error "The proxy moz-proxy://https-us-washingtondc.privateinternetaccess.com:80 is requesting a username and password. The site says: “Private Internet Access”"

I'll be switching VPN providers when my subscription ends

Update: 8 months later I'm still having to switch servers, and reinstall the add-on every week or so.

No longer works correctly, keeps dropping connection to the internet.

Cannot activate...

The Firefox extension for Private Internet Access seems to not work for some reason...this started a couple of weeks ago so I just deleted it today...I'm tired of messing with it.

broken

Completely broken, PIA should be embarrassed this is even still available to download

Does not work for me. Same error others are reporting.

Last updated: 3 years ago (Feb 10, 2020)

Tells you all you need to know. They have not updated this extension and I don't even think it has a current list of servers to connect too because it is totally broken and won't even start.

Can't get it to work in Firefox. Same error as all the other users

Outdated and broken

Come on PIA guys, we use Firefox for a reason, and PIA for a reason. The add-on used to work well, but at the moment completely unusable with the NS_ERROR_UNKNOWN_PROXY_HOST error.

Dated application that doesn't work anymore. Choose a better VPN company to give your money to.

Stopped working within past week.

Paid subscription.

PIA FF extension v2.4.1.2
FF v108.0.1
Windows 10 Enterprise v19041.1415

doesnt work at all with paid subscription

This extension doesn't work on macOS Ventura with Firefox 108.

Private Internet Access it's a ridiculous company that doesn't know how to make an extension that works. I will cancel my subscription and never used them again. Time wasters that should not be allowed to do business on the Internet. Shame on you Private Internet Access.

Does not work.

Connection error
NS_ERROR_UNKNOWN_PROXY_HOST, how to get rid of it?

Does not work. Error "NS_ERROR_UNKNOWN_PROXY_HOST"