Barcode Printing

I have a Sharepoint list that is generating barcodes (to be used for assets). This is a new system so I'm adding all of out assets into this list and wanting to print a barcode for each of them on a label. I CANNOT figure out how to do this. 

I've attempted exporting to excel, doing a mail merge for the barcode value, and then changing it to EAN-13 barcode but when I print the barcodes my power app won't recognize them and scan them. 

Please help, this seems like something that should be easy but I just cannot figure it out and I'm about to lose my mind. 

Thanks!