How do I change the photo (not business logo) on customers' app receipt?

[Eiregrl]

I was recently with a customer when they paid me through the iOs app.

When their payment was confirmed, I saw my personal photo pop up on their confirmation screen.

It's the photo attached one of the three gmail addresses I use with my paypal account, but it's not my primary business address.

The photo that popped up isn't even the one associated with the gmail addy they sent their payment to. 
It's my personal photo, and I prefer that it not be shared professionally.

Why is this happening, and how do I make it stop?

Thanks in advance for your assistance.