If your label is getting stuck (usually during printing something really dark, like a barcode or a thick straight line), this is most likely due to your print density being set too high for your label. 

Please set your print speed to between 4 and 8 and density to between 8 and 14 and try your print again. 

If your label is too light now, increase the density by 1. (a large number means higher darkness)