Can't Login to FaceTime for Mac
On my MBP I click on the "sign in" button and it flips back to the same login screen on FaceTime and asks again to sign in. It will not sign in at all. It's been like this for over a month now but used to work just fine (using the exact same login). It does not say I have the wrong password or any warnings in red writing (unless I do type in the wrong passward on purpose). I have had others try to login on my facetime who end up having the same problem of not logging in and no error message.
FaceTime has been working great for over a year on my MacBook Pro and then it began to have difficulty. My iPhone still works great making phone calls to the same people. I've tried loggin in and out of FaceTime on my iPhone and it works just fine but not on my Mac.
This is extremely frustraiting since there is NO error message and I have no idea what to do. I hope someone can help with this issue.
MacBook Pro, OS X Mountain Lion (10.8.5)