Thanks for getting back in here, @jtmpv.
In QuickBooks Online, there's a maximum of 300 names that will show on the customer list. Once it increases to 300, some customers will not show on the list.
You may consider running a report to see all the customers in your account. Here's how:
- Log in to your QuickBooks Online account.
- Go to the Reports menu at the left panel.
- In the Find report by name field, search for Customer Contact List Report.
- Click Customize to add some filters to your report.
- Once done, choose Run report.
If the customer is still not present in the report, I suggest contacting our support team. They have the necessary tools to check your account and help you fix your issue.
For more information, feel free to check this article: Add and manage customers in QuickBooks Online.
Let me know if there's anything else you need. I want to help and ensure you'll achieve your goal for today. Have a pleasant day.
