My name is Michael, I’m a Guru here with Shopify, thanks for getting in touch. :)
I have some experience with the Profiteer app as a Guru helping Merchants and I've seen many stores using the app without issue. The reviews for it are excellent and in my experience they offer great support. I've rarely had anyone experienceing problems with the app and found that it's quite easy to use.
I hope this helps Jimmy and best of luck with your Business going forward! :)