The payment can go through, but if you didn't wait to get confirmation on Shopstr's end then the merchant will not get the payment and it will stay with the Cashu mint unretrieved (we can refund you for this if you like).

There was a minor browser compatability issue that could have been causing this drop in payment confirmation (seemed to be affecting Brave primarily) aside from lack of waiting and/or internet connection issues that was just found and resolved.