You can delete the accounts payable transaction (bill) without opening it so you'll not be prompted to update your subscription.
- Click on Expenses at the left pane, then select Expenses beside Vendors.
- Look for the transaction from the result, then click on the drop-down arrow under Action.
- Select Delete.
- Tap on the Yes button to confirm the action.
For additional reference about deleting bills in QBO, read this article: How to delete a bill.
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You could temporarily upgrade to a subscription that allows A/P and vendor bill management, clear them (or delete if already paid) and then downgrade for next cycle. The subscription level you obviously ar eat does not allow you to enter Bills from Vendors, only record checks/expenses. If billing terms are important to track hen a permanent upgrade may be in order