Hi ramboseventyone, I understand how challenging and inconvenient these issues are, and we’re here to help find a solution that works for you.
One possible reason is that some customers might be marked as inactive in your account. QuickBooks Online only shows active customers in the Customer dropdown on the Sales Transactions page, so any invoices linked to inactive customers won’t appear in this filter.
However, since you’ve mentioned that related invoices are still displaying on the Sales transactions page, despite the customer not appearing, it could be indicative of a temporary browser issue.
To address this, please try the following steps for temporary browser troubleshooting:
First, to give the system a fresh start, log out of your account and then log back in.
Second, if the customer in question is still missing, let's try using a New Incognito window or any other supported web browser to ensure you're logging in to the updated interface.
If these steps don’t solve the issue or if the inactive customer isn’t the cause, could you provide additional details about where specifically you’re encountering the problem? For example, if the issue is occurring on a specific page or section, that information will help us pinpoint the cause and work toward a solution tailored to your situation.
If you have any additional information to share, please don’t hesitate to reach out. We’re here to assist you.
