Issues with settings

The client only sells these tins this time of year and seems that the settings get messed up each year and I have to try to remember how to use this plugin to help fix things. If anyone can point me to the place to fix this, I’d be so grateful!
This product is not showing an accurate price. (it is showing $0) and this one is showing the price for the smaller tin: https://www.poppa-corns.com/product/custom-3-5-gallon-popcorn-tin/

In addition, it is supposed to allow up to three flavors when selecting the tin style and only one style allows that.

I set this all up in 2017 and don’t use this for any other site so I don’t remember how to fix these issues. Help!

The page I need help with: [log in to see the link]