Hi Moya,
In the case of using multiple users in the same project you should do the following:
2) Enter the username and password of the person entering the data into the Username and Password fields in General Settings (that is the person whom you had granted access - not the user who created the project)
3) Now go to Get blank forms; you'll only see the forms that this secondary user has been given access to.
We'll update the instructions to include this use case, thanks for pointing it out.
Best,
Tino