How to delete all the imported receiving payments this month?

I can help you with deleting those imported payment transactions, @kybae8533-gmail-.

You can exclude those payments that were imported from your connected bank account. Follow the steps below:

Here's how to undo the transaction and then exclude them:

1. Go to the Banking menu and then proceed to the Banking tab.
2. Choose the tile for the bank or credit card account you downloaded the transaction from.
3. Select the Categorized tab.
4. Find the transaction you want to delete.
5. Select Undo from the Action column.

The transactions will now be back in the For Review tab. You can exclude the transaction from here.

Follow the steps below:

1. Select the Banking tab from the Banking menu.
2. Choose the For Review tab.
3. Tick the boxes next to the transactions to exclude.
4. Click on Exclude. 

Transactions that you've excluded will no longer appear in any account registers or financial reports.

Check these articles for detailed guidance in undoing and excluding your imported transactions:

• Unmatch downloaded bank transactions or move them to another account
• Exclude a bank transaction you downloaded into QuickBooks Online

Once done, you can reconcile your accounts to ensure your books are accurate and there aren't any duplicate transactions: Reconcile an account in QuickBooks Online.

Let me know if there’s anything else that I can assist with your transactions by leaving a comment below. I'm always willing to help. Have a great day!