Installed but no UI is displayed. Therefore uninstalled

This module slows down Firefox sooo much that it was almost not possible to use Firefox anymore... I do not recommend it at all

immediately pegged my cpus and rendered firefox totally unresponsive; plus, the UI that renders by default (I can't even tell if there's a way to change this, it was so unresponsive) takes up way more of the screen than I expected. I ended up having to kill the process and hitting the extension manager to remove it, which also made my previous session disappear, so I couldn't even get back those tabs.

Not working in firefox android version 57 (2017.11.15) please notify that it is not available in andriod or else users have to download to know