Hello there, @garagedoormaster.
As an insight, Acuity Scheduling automatically syncs customer details from new appointments booked to QuickBooks Online.
At this time, I'd be able to help point you in the right direction. I'd suggest you get in touch with Acuity Scheduling Support team about what you're experiencing about the integration to sync the application successfully. You may email them directly at this email address: support@acuityscheduling.com or visit their Help Center.
Here's a resource that can help you learn more about how Acuity Scheduling works in QuickBooks Online.
To learn more about the Apps menu, you can check out this article: How to use QuickBooks Apps.
I'm always here if you need more assistance about QuickBooks-related concerns. I'll be around to help. Take good care.
