I now make my custom labels in 1500 x 1500 but I see the rules say "Cover sizes must be as follows:
* Single Case - (3240 x 2175)
* Double Case - (3305 x 2175)
* Labels - (1400 x 1400)
*These are the minimum and recommended sizes for your uploads
*will specify more sizes soon "
Will it be a problem to upload at 1500x1500?

Those are minimum sizes. 1500 x 1500 for a label is fine my friend:thumbup: