This extension is only semi-useful... It only sporadically works when at team page at sleeper, and it doesn't update advice when I already have changed lineup in another tab (YES, I clicked on "update advice" when an error popped up after trying to submit lineup on sleeper through this addon):

This helps me keep track of my teams in different leagues across multiple site.

This extension does not give you access to fantasypros tools without payment. It won't tell you that until after you've installed. It also requires giving permission for access to see every site you visit ever. fantasypros needs to see espn,yahoo,etc. Either this extension has extremely dense developers or they are stealing and selling ALL of your data.

Do not install.