Urgent! I need help!

[FalloutForever]

I installed this thing for Firefox on my dads computer, and I got worried so I tried to get rid of it, and ended up deleting the whole options menu thing, if this has happened before or if you know what to do please help!!

 

[Fusoiya]

right click the top bar and check the menubar option

 

[FalloutForever]

Its not there at all! Thats my point.

My search bar, my history storage part, everything isn't there.