If you have a US Account, here is what worked for me: Hover over your profile (on a browser) select Account Settings, scroll ALL THE WAY TO THE BOTTOM and select Shipping. In the second box called Printer Preferences, click Update Settings and then in the Shipping Carrier section, click Change Printer Type, select Zebra 2844 4"x6" (assuming that's the size label you're using) It took me FOREVER to figure this out and lots of frustration, trying to print a PDF and align it correctly (SO TEDIOUS) but this setting prints PERFECTLY on the Dymo 4XL. Considering that the DYMO is probably one of the most popular label printers, I'm only slightly surprised that PayPal doesn't have a default for that one. BUT changing the setting once it was initially determined was quite a pain too. I hope someone is able to read this and it helps you out!!
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