My bad for not explaining myself clearly first time.
In my inbox within the game was a message to collect Ember and another item from twitch. When I clicked on the link to collect it took me to a twitch login screen. No matter what I entered as my user name and password the page always stated that it was incorrect. I tried my twitch login details, then my warframe login details, then I went to twitch from a separate browser and using the same failed twitch credentials was able to login. I was hoping that someone else had solved this problem and could give me some guidance.
Now the offer has ended so I guess I missed out.