Can't log in on mobile app - must create separate profile??

[Quelletea]

I have been using Duolingo online, but download the app for iPhone so I could study more frequently and everyday. However, there is no option to log in on the mobile app, only to create a profile. I have to create a new profile to use it on my phone? Seems silly, I must be missing something.

[spiralgaia]

I wish someone would respond to this! I was using the app for a while but just got to a dead-end where it wants me to "create a profile" or "discard my progress". There is no option to log in with my existing profile that I created online!!!