Hi joemeilak,
These are the possible reasons why it happens:
- The amount may be zero when you create an invoice. This is why it'll show as paid when you save it. Make sure to review the the total amount of the invoice. It should not show as zero amount before saving it.
- It could be the Automatically apply credit is turned on in your company setting. It'll apply when you create an invoice to the customer who has an over-payment. This only applies credits to invoices.
You can turn off this preference by following these steps:
- Select the Gear icon at the top.
- Click Account and Settings.
- Select Advanced.
- Select the Pencil icon in the Automation section.
- Check the box before Automatically apply credits.
- Select Save,
- Then, click Done.
Then, you can go back to the existing invoice to unlink the credit that was applied to it.
If you have follow-up questions, just post these right away. I'm here to help.
