heartlandstoremn review for Retail Barcode Labels

This app will no longer create barcodes for me. I have cleared my cache, reloaded my shopify, only selected one item at a time to create barcodes, and done the selection for create barcodes for all products with out barcodes. Nothing seems to work after trying 10x and the robot has offered all these suggestions-which I have done with no avail. Additionally, the app also don't not print multiple varients on my 1x1 labels. I am trying to switch over from lightspeed for my pos system, and lightspeed was able to get all my info onto these 1x1 tags no problem.