I understand the old one will not work under the new version. That's not nice but you can't help it.
I found the little block in the top right of firefox. I will need to find out how it works. Perhaps itś possibe to show what every part is when hovering over it?
Firefox completely changed the way extensions must now work and the old version will no longer which is why I was forced to change everything. Unfortunately there is nothing I can do on my end to change this.
