You may wish to work with further options related to your QuickBooks account. They can be found by going to Settings, clicking the Billing tab, and scrolling down to the QuickBooks Integration Options section. Review the options as needed and be sure the Save your selections. 

Note: If you choose to not include the payment link on the AppColl invoice, it should be noted that simply placing a URL in the payment instructions field will not convert the text to a hyperlink.