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

I have tried printing a 4x6 label and have gone through 7 prints. I usually use Pirateship for all of my shipping labels becuase they’re very easy to use.

I have avoided using shopify’s shipping service becuase it sucks. It doesn’t print 4x6 and I have not been able to use the printing labels with my Zebra Thermal Printer. I’m very dissatisfied with Shopify to be very honest and I only use it becuase it’s cheap. I would like some technical support to help me print this damn label. If I cannot get this to work I will probably not be referring Shopify to any of my family or friends. Very dissapointed.