It doesn't work.

This extension is extremely buggy.
If it gets stuck in a login/error loop, you can open a new tab and log into the captial one website. then re-open this extension and it'll work.
Aside for the login/something went wrong error, it absolutely kills memory usage. Specifically when visiting a site like lowes.com. It maxed out my memory usage and started to freeze firefox. Initially I thought the latest firefox update was the problem. Nope, as soon as I disabled this extension I saw my memory usage drop like a stone.

Just doesn't work - tries to login and either the login screen disappears or get a message saying "Something went wrong"

Doesn't work, calling tech support didn't help.

One star because it creates a memory leak with youtube livestreams when chat is open scanning every message for autofill fields.

worthless piece of s#$t !!!!!

This extension has always worked poorly and now only lets certain types of card holders use it at all, with no notice of the change. Bad extension, bad support, shame on Capitalone

This generally doesn't work. Any time it pops up to log in, the page flashes in a popup window, immediately closes, and fails. I haven't found any workarounds that work - other than switching to Chrome whenever I need to use it. The most frustrating aspect of this is the browser extension is the _only_ way to generate virtual card numbers, for absolutely no reason at all. If I could just go to the Capital One website to do it instead then I wouldn't even be all that bothered that this extension never works.

It used to work, though it was always hard to login. I figured out it was best to login using your browser in a tab first before trying to login to Eno. More recently it's basically unusable. I can login with my trickery most of the time but I can't get cards to load.

Really cool idea and original implementation, but Capital One has shown it cannot keep software working. I bet they cut the development team after they delivered; classic BigCorp nonsense that destroys products.

troublesome extension. great when it loads but typically it crashes!!!!!

Tried to verify my identity and said my phone number didn't belong to me. I've had this phone number for about 10 years now.

Unable to log-in. This plugin works great in Chrome but is useless in Firefox.

No work no function no bueno. Awesome idea but no carry-through.

Quite amazing that this plug in still suffers from the problems of not staying signed in, or being able to sign in at all. Very sad.

Great idea that worked unreliably for years. Suddenly I can't use it at all. CapOne tells me I have to start using the app in order to validate. I am not putting their invasive app on my phone. So now I have dozens of virtual cards that I can't access.

Does not even allow to sign-in on Firefox.

This extension worked great when I first added it. Like everyone else lately, I find it no longer works, especially since the last firefox update that removed the extension buttons at the top where you could click on the extension you wanted to use. I contacted Capital One to complain and suggest they need to allow people the ability to create new virtual cards from within the app or on the website. I was told they are working on all these things. And that Eno is a third party thing separate from Captial One which I don't see where you can contact them from. Only suggestion was to use Google Chrome instead which I chose not to use anymore several years ago. Hope this info is helpful to someone out there!

Easily the worst extension that I'm forced to use. The multiple virtual card functionality isn't available through the website, and this extension barely works on a good day. It logs me out all the time, and frequently won't let me log back in.