Your comments

As I said in the main text, I tried twice deleting my profile and creating a new one. The first time it worked but the second time it didn't. It doesn't matter anyway as the LSP addon is working fine for so far. Thanks for your time. 

Hey I tried the other addon you recommended for alternating backgrounds and it seems to be working fine so far and the favicons are visible. Thanks.

Is there a way to delete the comment with my info?

Were you able to find out what the problem is?, Win10, Firefox 60.0.2.