Why am I not able to sync my time-tracking software Clockify if I have already successfully integrated the accounts?

Are using QBO US version? Simple Start or a higher plan?

Hi there, @lorena-violetage.

I'll point you in the right direction concerning integration concerns.

I recommend reaching out to our Developer’s page to give you more information on third-party app integrations. 

Here’s how to do it:

1. Visit this link: https://help.developer.intuit.com/s/.
2. Choose QuickBooks Online under What do you need help with?
3. Click Ask a Question.
4. Sign in to your existing Intuit Developer Account or create a new one.
5. Enter "Fix incorrect tax and line amount settings using invoice API" in the Question box.
6. Click Ask.

To participate in the developer's forum, you must be logged in with an intuit account.

I'm also adding this article on how to add and manage time: Time Tracking in QuickBooks Online.

In QuickBooks Online Essentials, QuickBooks Online Plus, and QuickBooks Online Advanced, you can monitor and manage employee timesheets. check this out for your guide: Track and manage QuickBooks Time.

Let me know how everything goes, and if you need any additional help with your QuickBooks account, please write a comment below.