I too was having problems on Firefox and I will NOT use Chrome. I think I may have found a fix/workaround for all you Firefoxers. It appears the Eno extension does not like multiple tabs open. I close Firefox and when it restarts I just go to the site I'm purchasing something from and Eno works. When I'm done I go to History>Restore Previous session and Firefox will load the 50 tabs I had open from before. I hope this works for you because Eno has become a part of my online process.

It used to work, now it doesn't. Tired of searching for solutions, so now I switch to Chrome to pay for items, followed by an immediate virus scan that always shows multiple PUPs. Tedious, but it is important to protect my credit card information.

I LOVED this add on until it stopped working. I used it exclusively and then it just stopped working on my Firefox browser. Like everyone else, it is just an endless loop and I can't get logged in anymore. I Do NOT use Chrome. Please fix this issue.

Still doesn't work correctly. It works once or twice, then nothing. If I remove it and re-add it, it will work a few times then stop again.

(updated 10/21) This app is constantly failing to populate data on the "payment" pages of web sites. I have to log in to CapOne and manually copy virtual card data over to complete a purchase.


This would be a really great app if I could choose between persistent and one-time-use card numbers for purchases instead of "persistent only" .
Otherwise, it is a useful add-on.

This will not work on Firefox. Once I try to verify using my CapitalOne app, the extension hangs or sends me on a never-ending loop of trying to verify. I do not use Google Chrome as a browser.

Confusing, confusing, confusing . . . until (after maybe 10-15 uses) the procedure begins to clear. This is a good, secure app, but NOT intuitive to use. Even after many uses, it confuses the heck out of me

As easy as it gets, click on my eno Man and click create... done.

Eno might actually be great, but I can't find it. Doesn't show up on my browser. Is this a joke? Keep getting notifications about using this add on, but no matter how many times I download it, it's never there!! Stupid!!

I have used Eno for about 3 years now. After having credit cards stolen in the past and developing paranoia about enter my credit card information online, Eno seemed like a good alternative. So far, it continues to work extremely well for me. 3 websites that I used were compromised and within seconds I was able to shut those virtual numbers down without interrupting my main account. Eno sends me text alerts whenever there is something questionable, and I can react in real time if necessary. I have had some issues with the app after some updates have occurred to my computer, however, I have always been able to get quick resolution to my issues. (Note here, Pre-COVID 19) All in all, I am very happy with Eno.

used to work good, now does not work, have to remove and reinstall for the 2nd time

After dealing with the total pain of having my credit card details stolen recently for a different credit card, I decided to give this a try. I used it for the first time today and it worked flawlessly. I love how the window pops up and then autofills my virtual card number. Very cool!

Eno was working just fine in my Firefox browser since installing it a couple years ago, then recently it began to consistently malfunction. Since about May 2020, clicking the Eno icon brings up a "clueless Eno" that can't determine it's already been installed--despite the 20 or so preexisting virtual card numbers on file (which couldn't have been created without Eno being installed.) Stoopid Eno!

During the 1 hour, 50 minutes, and 53 seconds spent on the phone with Capital One Customer Service, the truth came out. The June 5th, 2020 implementation of the current Eno version was tailored to work just on ONE of today's top 5 web browsers--NOT Mozilla Firefox, NOT Apple Safari, NOT Microsoft Edge, and NOT Opera. Eno now works properly on ONLY one web browser, Google Chrome.

Once again, Capital One, thanks for less than nothing!

Ever since the 3.5.1 update, the addon has been lagging webpages for me. It's basically unusable now until this is fixed.

this requires access to data for all websites and access to all tabs before installing it -- ridiculous and totally insecure, there's absolutely no need for them to be so intrusive just to generate a virtual number -- I did not install it

Can't login to use the app.