I’ve done some more complex fomrating of labels and it works fine for me. I also notice you censor out your business name in the orignal email but we can see it in the print template, if you dont want the name online I’d suggest removing it from the template shown on the forums.
I set a setting value for each order and for each print job I add one to this from the script, it works fine for me but I understnad its a bit complicated