Olivia's Outfits review for Globo Product Options, Variant

I use this app to charge additional costs for larger sizes of the handmade clothing I make. This app has now glitched twice and not charged customers the correct amount for their orders, so, not only do I pay monthly for the app I am losing out on money from customers being incorrectly charged. If this happens for a 3rd time I will be cancelling this app and looking for an alternative.