When I create an invoice is shows as being pain when it’s not

QuickBooks does this when a setting automatically applies credits to new invoices is enabled. You can turn this off so that the current credit to any invoice won't automatically apply.

Go to the gear icon > Account and Settings > Advanced > Automation >Turn off Automatically apply credits.

Now, to fix the invoices already marked as paid, go to Sales transactions, find the specific invoice, click its Status, then tap View payment #, and uncheck the invoice and the credit boxes.

Also, the wrong date happens because QuickBooks copies the date from your last invoice. In the same Automation section, turn off Pre-fill forms with previously entered content so it uses the current date instead.

Let me know if you need anything else. I'm here to help.