Associating a project with a client

Associating a project with a client

Hello.  I am new to Zoho CRM and am demoing CRM+ suite with projects.   I've created a project but I cannot associate it with the client / account, I get the below error.  I've tried looking for permissions settings but cannot find any to help.  I am the system administrator.   Is this because I am still on trial?   Thanks.