Hi there, @MPerk.
I'm here to share information about integrating third-party software with QuickBooks Online (QBO).
QBO allows integration with a number of third-party apps and software. Since you're unable to locate Club Caddie in the QuickBooks Apps Center and their website states that they integrate with QBO, I highly suggest contacting their Support team. One of their representative should be able to assist you with the process.
You can use this link to reach them: https://clubcaddie.com/contact/.
For more tips and other resources, I recommend visiting our website for future reference: QBO self-help articles.
Leave a comment below if you have additional questions about this or anything else QuickBooks. I'll be here to answer them. Take care and have a great day.
