Hi, arturo2. How are things?
We can either categorize the ipromoteu as your vendor or client depending on how they function in their business. We can record the ipromoteu as a vendor since they are the one who supplies goods or services. If you're getting a payment from them, you can manually record it within QuickBooks Online.
You can refer to these articles in recording the payment:
Know that I am always here to help in case you still need one. I hope you're having a good day. Take care!