You can't backup data (even manually) if you're a free user. So basically if a mishap happens, you lose access to all accounts created via Blur. The add-on was so good, until I learned about this.

I loved Mask.Me, the original version of Blur.

I had been using blur since its rebranding until I damaged my laptop about 2-3 years ago. I recently purchased a new one in Dec 2017. I added blur immediately to store all my accounts and password.

Today, 2/25/18, I reset my firefox settings to its default and it re-installed my firefox addons. When I logged back into my blur account, ALL OF MY INFO WAS GONE.

What a useless addon. What is the point of having a blur login account?

I DO NOT RECOMMEND.

I will now use firefox's password manager.

The add-on also slowed my browser when I was working on my new wordpress based site.

I have the latest version of Firefox on my galaxy S8 but it tells me that the Blur add on is not available for my platform. What-up dudes?

I have used maskme since it first appeared. This shift from maskme to blur was completely unnecessary, and with the new update for Firefox quantum maskme is not working and i lost all my passwords & masked emails. That tells me one thing this company is completely unreliable. If your a newcomer i recommend looking for a alternative elsewhere, if your an old user its time to look for something else.

Edit: I appreciate the effort but. I was well aware of the migration to blur, and i have tried doing so. many times in fact, every time it ended in failure. I already did roll back to an older version. Since there is no option to export the data in maskme (or hidden away to a point where its close to impossible to find) i had to process the data manually. i already moved to a different plugin.

Unclear up front what it does and how it works.
However after installation it immediately demands both my email, and (yet another) password, still without explaining what it does and why it needs those.
With all this, the extension has the foul stench of a commercial endeavour that will eventually try to lock me in, sell my data, or give it to the U.S. government.
So, absolute crapware.

I first started using this add-on when it was called DoNotTrackMe. That's all it seemed to do was block ads/trackers. Then it became Blur without much changes except the graphical design. Then after one update all it wanted to do is manage my passwords. Click the tool button or settings were only password related. Then after another update it was back to just ad/tracker blocking. Then it became an annoying password manager nagging me all the time if I want to save passwords Now it's back to just being a ad/tracker blocker. Perhaps I'll make up it's mind for it and remove it from my browser.