Thanks for getting back to us, @SCS14.
I appreciate you following the steps provided by my colleague @MaryLandT above. Allow me to jump in and share some additional information about seeing which invoices are paid in the Merchant Service Center.
When searching for transactions in the Merchant Service Center, it'll give you all those that have been paid, which is based on their Transaction IDs. In order to verify which invoice they're paid to, I suggest reaching out to our Merchant Support team. They have tools that can pull up your account and double-check this for you in a secure environment.
You can check out the article provided by my colleague above on how to reach them.
Please let me know how the call goes by leaving a comment below. I’m always here should you have any other questions or need additional assistance. Have a great day!