Is there any way to change the shipping label setting to the format 4x6?

It appears that my solution posted before seems to be because I was the shop owner and not on a staff account. HOWEVER, once I changed the label format for one order, the 4x6 format now shows up as the default option for all of my staff accounts. Not sure it’s a long term solution, but if the store owner can process one order for you, it may fix the problem going forward!