If you are told your Profile doesn't exist you will need to complete the registration process right from the start.
If you are told your Profile already exists make sure you are using the correct WYWM Platform and your correct login details or method.
For example, if you made your account logging in with Facebook you will not be able to login using LinkedIn or Google.
For Army click on this link https://army.potential.withyouwithme.com/
For All other users click on this link https://potential.withyouwithme.com/