App has totally broken on-boarding process – inKin Social Fitness Challenges Review

It took me an incredibly long time to unsuccessfully create an account via Facebook. After giving Facebook access I’m redirected to a screen to enter my password (why?? I’ve created an account with Facebook.) then there is a both a sign AND a login button (which one do I click?? Only one should be present) an upon clicking either I’m told I’ve submitted an incorrect password. After doing this for about 15 minutes I’ve given up.
Review by sd18385969 on inKin Social Fitness Challenges.