I have a unique case. I have a fb page ,which has a shop now button, which takes me to my website. my website uses a social login plugin . from my mobile phone when I follow the sequence of coming to website from facebook, and when I try to login using fb, I am unable to login.i do not get any error, but I don't get logged in. this happens only on some mobile phones and not all. it works fine from fb mobile site or from desktop or if I directly go to my website. on some phones however, it is working fine.