QuickBooks Online (QBO) connects with third-application suited to your business needs. We're here to ensure your integration is smooth and effective, Lisamt.

QuickBooks relies solely on the data it receives. You can reach out to the Payroc Support team to see how smoothly they integrate. Aside from that, they are more knowledgeable and well-versed in the settings and can offer guidance on managing them effortlessly once integrated.

On the hand, you can also check out some of  the third party-application links that works well with QuickBooks. I've added this screen shot for your reference:


 

If you'd like tolearn about QuickBooks Payments, I've added these articles to help answer your questions:

• Common Questions About QuickBooks Payments Deposits in QuickBooks Online
• QuickBooks Payments FAQ

Let me know if you have any questions when managing credit card merchant. We'll always be right here to help.

@MariaSoledadG  "You can reach out to the Payroc Support team to see how smoothly they integrate."

The OP certainly could reach out to a group of people who are, ultimately, paid to make their product appear desirable.

Alternatively, @Lisamt  could reach out to customers of both QuickBooks and Payroc to hear about their actual experiences with said products' integration.

Oh, wait.

@Lisamt 

You can use a 3rd party app to sync QBO and Payroc.