Hmm, 2nd extension with this error:

"Download failed. Please check your connection."

The other one just now was Facebook container.

So is the problem the apps? Or the Mozilla app store?

Only other possibility: the system level ad-blocking built into Peppermint OS.

Perfect in almost every aspect, missing the ability to re-sort placement in the menu. Some of my containers are much lesser used and preferably would be better at the bottom.

I generally like using this add-on, in addition to Private Browsing mode it pretty much does everything I need it to. There's a few options that could be added that would bring it to the next level:
- customize container colors instead of choosing from a pre-set list of 7
- when pressing ctrl-T, the new tab should inherit the container of the currently active tab
- it would be nice if there were an option to skip the interstitial that prompts you to confirm when opening a url in a container other than the one it's programmed for
- i wish there were advanced options for programming which container should be used for which urls - cookies can be set by domain or path, it's pretty crude that we can only associate a single domain with a single container

Also a few surprising bugs (I'm on a macbook):
- clicking "Open in *Current* Container" on the interstitial to override the domain/container pairing doesn't work (but using keyboard controls does)

I think it's awesome for organizing my browsing history and making the ad trackers life harder.

I would like to suggest to add regular expressions to the websites urls that fall into some category.
Were I'm currenty working, we use many subdomains for our customers, for each subdomain I have to register into some specific container.

Awesome how better my experience became, only thing to add is the option to clean history for a single container.