It's likely an issue on your end. The printer, filament, or a setting you have different, or maybe the plate you're using. Slice the file and look at each layer and you will see.
These are super cute, they print really well, I wish my filament would lay right on the letters but it's not too bad. it doesn't mean there's something wrong with the print profile, I think it's just a me thing lol. They are really cute though.