QB Issue Resolution:

Thanks for reaching out to the Community. I’ll be happy to explain how to mark an invoice as paid.

To do this:

1) Click on the Plus icon, and then select Receive Payment.

2) Choose your customer.

3) Select Check as the Payment method.

4) Check the invoices you want to mark as paid.

5) Once done, click Save and close.

For more information Invoices, click here.

Please keep me posted on your results with this here, the Community has you covered. Thanks again, I’ll be standing by for your response.

Resolution for Issue 'I just noticed my october invoice shows ‘unpaid’ when my vendor paid. how do i change ‘unpaid’ to paid?' available: Yes (Solved).
Source: Intuit Community forum.

I just noticed my october invoice shows ‘unpaid’ when my vendor paid. how do i change ‘unpaid’ to paid?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Invoice
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