How many user profiles can I have and do they each have up to 5 for the custom ear images?

We allow close to 128 user profiles with different email IDs. The best use case for this is if you have multiple users on the same machine. Each one can create their own profile with their ear image. Each one will have up to 5 custom ear images. However, at this point, we allow only one user per license. 

Related Article:

How do I add a new user profile or remove an existing user profile?