Kelly Rhea Deaton's dashboard

i have almost the same problem. I have an iPhone. When I try get an email from FB and try to respond to, say someone's post, it asks me to log in. I try to log in, I get a message that says incorrect email/password combination. EVERY TIME. If I then go to a computer & log in using the same u/n and p/w, it works fine. So, I know it's not my typing or that my u/n or p/w is wrong.
Note: I have the FB app on my iPhone and am able to get through perfectly there, just can't get to FB by the link in my email on the iPhone.
HELP!