To sign into Concur on your phone you will need to follow these steps:
First on your computer:
Go to imgacademy.okta.com
Sign in with your @imgacademy.com email address
Click the Concur App on your Okta dashboard.
Once in the Concur app, please select the profile icon in the top right. Then click Profile Settings.
Once in profile settings look for Concur Mobile Registration, click this link
On this screen, you should see a Username. Use this Username to sign into the Concur Mobile App and it will give you an SSO option to authenticate with Okta.