Zoho CRM and zoho books Integration issue

I cant seem to find why, I cant integrate the two services, the link is made contact is shared but in zoho CRM in the contact windows where the you have the contact view, there is a field where you should have a zoho books section ifon with in zoho CRM and it says.. Insufficient Privileges to perform this operation. Contact your Administrator. .

This is on the administrator page. I cant seem to find the setting to reverse that privilege.