"This User is Not Allowed to Add in Zoho; Please Contact Customer Support."

"This User is Not Allowed to Add in Zoho; Please Contact Customer Support."

For the past few days I have been trying to work through this issue so I can get my development team a company email for my nonprofit. I am the only person on the account and I am the admin for the account. I have yet to get a resolution for this issue with adding email users to my account. I have sent three emails to customer support with no response and I have called support twice and been told; "please hold and I will transfer you to a technician" in which I get put on hold and the call gets "dropped". I really enjoy the features of Zoho and I was thinking about becoming a paying customer once my nonprofit grows enough but after this experience I am not sure if that is going to be a good business decision. So can anyone on here please tell me what I have to do in order to get this resolved?