Help connecting facebook to yahoo messenger

Greetings, I need some help with connecting my face book acct to yahoo messenger again as when i sign into yahoo messenger I do have a button to sign in to face book so i can see my facebook contacts within yahoo messenger. However when I click this button nothing happens.
I went into yahoo messenger settings and clicked manage my facebook acct and again nothing happens just sits idle... j

I recently upgraded my system to windows 10 64-bit version and I do have the most recent version of yahoo messenger installed

If someone could kindly help me I would greatly appreciate it
Sincerly, Erin (dropper1973)