RMS - I can’t sign in to the Manager app, it says invalid customer ID – Recipe IT Service Desk

Question/Issue:
I can’t sign in to the Manager app, it says invalid customer ID

Troubleshooting Steps:

Ensure to follow the instructions - user needs to know where the Advanced settings is on their personal device - this is different for all phones and more challenging to locate on Android phones.
There are also two different JDA Manager Apps. Ensure you have the correct logo like in the poster below.

Links to Training Sites:

ESS (Employee Self Serve):
https://sites.google.com/recipeunlimited.com/rms/home

RMS - I can’t sign in to the Manager app, it says invalid customer ID