Hi Svitlana,
Thanks for reaching out to the QuickBooks Community. I get how important it is to have your Payhawk integration operate smoothly so you can concentrate on your business workflows instead. I'm here to make sure you can get the support you need with your integration concern.
To start, could you share more details about what’s happening when attempting to integrate with Payhawk? Are you seeing any error messages or prompts in QuickBooks Online? Does the integration stop at a specific step or fail to sync data? If possible, providing a screenshot or the exact text of the error message will help us pinpoint the issue more effectively.
Since integrations rely on both systems working seamlessly together, it may be helpful to also contact Payhawk’s support team. They can verify if the issue is coming from their end or provide specific guidance on the integration process.
I’m confident that we can work through this together. If you have additional details to share or need other assistance with troubleshooting QuickBooks Online, don’t hesitate to reply here. I'm happy to continue supporting you until this is resolved!