When I try to download an add on, I get a message that I need to install FF first

I have a dozen Add ons that work well. When I try to download another, I get the above message. I can access the site using FF. I tried to re - download FF, but continues to be the same thing.

The same issue happened to me in late 2015, but things were OK at the beginning of January. Now the issue is back.

Fake (mobile Android) uses a WebKit user agent. You will need to put failing install extensions.

Tags: Firefox App

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