I have a similar problem to rest of you. For me, Facebook will not properly link to Waze on my SG3. I have uninstalled and reinstalled both Waze and Facebook apps, I have cleared the cache, I have cleared the data, followed just about every help topic I could find and still no FB connectivity to Waze on my phone. I even like Waze so much that I completely wiped my phone in an attempt to fix this (out of desperation, not stupidity). None of it worked.
I believe what happened is I broke the connection when I killed unknown sessions on my FB account. This seems to be about the same time I started noticing my Waze pic and my FB friends list no longer visible on my phone. The account works perfectly fine, other than the FB connectivity.
My theory - I killed the session and the Waze app isn't smart enough to realize that I killed it. Facebook sees this connection as an unwanted connection. But, the Waze app on my phone thinks everything is working normally.
Can someone from Waze check the code to see if it can updated to check for an authorized session each time - and if there is not one, to reauthentice?
Let me know, please. This is driving me nuts. Plus, I am very curious about the fix.