How can I continue selling through e-transfer?

I recently started selling on here through interact e-transfer and noticed that quickly my account got flagged by my bank within 2 weeks of transactions. After getting my issue with the bank resolved my first trade coming back was apparently marked as a fraudulent transfer by the sender and once again I have to go in and explain things to my bank. Does anyone know ways around this so I can continue trading and not always have issues with my bank?