Steemit More Info not available in Firefox Extension Store

Steemit More is one of the most useful tools I'm using while posting or checking my feed on SteemIt.

Today I downloaded Firefox browser and went through Steemit More Info 1.4 - Chrome Extension + Firefox Extension to check whether if it is avaible for Firefox like it is for Chrome.

I was happy to see that it is also available for Firefox and clicked on the link to download it

But when I clicked to the given link I came up with this Page not found page:

My suggestion for the developer:
To update the given download link for Firefox extension
If not available on Firefox anymore, to update the original steemit post declaring it is removed from Firefox or to delete the given link on the post.