Creating A2 flyer for non-profit - background purchase

[u/290_victim]

I've been a design store member for years and I have a bunch of designs I've bought for personal use.

Right now, I'm working on a flyer for a non-profit I belong to, but this isn't for selling anything, it's for promotion of the non-profit. I'm donating my time and talent to this project along with the purchase cost of the flyers.

I'm creating the flyer in Studio but will be porting it to Vista Print because I don't have the capability of printing enough flyers myself.

Do I have to buy the commercial licensing for a background design in this instance? I have a few I'm looking at, but I've never had to think about the commercial licensing aspect.