Offer multiple payment options
It is my understanding that Instaproofs will only be offering Stripe as a payment option soon. When I was a user of Pixieset, I had really negative experiences with Stripe. It attracts a lot of spam emails and my account was hacked, almost costing me over $1000. It took a lot of effort to fix the problem and shut down both my Stripe and Pixieset accounts. I do not feel safe using Stripe, and I really enjoy Instaproofs. I would hate to have to learn and set up a new image hosting site simply because of payment options. Offering an addition option such as the current system (waiting a week doesn't bother me at all) or PayPal would be so appreciated.
As someone who makes few print sales, I really like the commissions setup and it is one of the reasons I switched from Pixieset (and encouraged others to join me). I really hope Instaproofs will reconsider, even if that means higher commissions.
Olaf Gradin commented
Bottom line, Clover is the cheapest for your customers to leverage while continuing to offer good integration choices.