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Under review

Can't download from VK.com (FF 56.0.2, extension 8.42)

danissimo fa 5 anys actualitzat fa 5 anys 8

No download button, no bitrate popup, menu items from the toolbar button don't work either.
FF 56.0.2. SFN 8.42

Answer

Answer
Under review

Hello, Reinstall the extension:

https://addons.mozilla.org/firefox/addon/savefromnet-helper/

Clean your browser's cache and cookies.

Answer
Under review

Hello, Reinstall the extension:

https://addons.mozilla.org/firefox/addon/savefromnet-helper/

Clean your browser's cache and cookies.

Strange, I didn't touch anything, but now everything is back to normal.

The button disappeared again (and all the other that happened before). I uninstalled the extension, cleared cache and cookies, disabled all other extensions, installed SFN again, but that didn't solve the problem.

And please remove "Fixed" label — the problem isn't solved.

Refreshing FF helped, the button is back again, thank you.

I found that in order for the button to appear again, you just need to open VK in a new tab.
So no need to delete cache or cookies, or to refresh the whole profile. Thus I rolled back my old profile, open VK in a new tab, and the button is back again.