You'd want to make sure to record the VAT payment first then matched it. I can guide you in doing so.
Go to the Taxes menu.
Choose the VAT tab.
From the Returns section, locate the returns you've paid.
Click Record payments from the Action columns.
Enter the VAT payment details.
Click the Save button.
Now, you can match your recorded VAT payments with your downloaded bank transactions. The system will now be able to automatically detect the match. Just click on the Match link from the Action column.
If you're not seeing the 1 record found prompt. you can manually find a match. Here's how:
From the ForReview tab, locate the VAT payment.
Click the FindMatch button.
Select the possible transactions that match the payment.
Hit Save.
You can read through these articles to learn more about managing your downloaded bank transactions and VAT payments: