WSOP log in problem

OS: 8.1 64 bits
Security Software: AVAST 17.3
Since i installed comodo icedragon on my laptop this error message appeared when i tryed to log in with facebook account on WSOP(World Series Of Poker): This log in option is not available, make sure you are not in private browsing or try using an other option to log in.
I’ve searched on the comodo help website for a solution but my browser does not have privacy browsing mode enabled so what is written there is useless for me. Also, i can not log in on official website but i can log in with gmail account but on gmail account i do not get my old level and chips back so it is useless.