How to fix a frozen screen when creating retail bar codes?

In the retail Bar codes app, our screen freezes with the following message when we try to create barcodes. We’ve waited for 2 days from support from Shopify with no fix. Any suggestions?

Barcodes are being created

If you have many products and variants, this process may take a while. When all barcodes have been created, you’ll see an update on this page.