This is an international question and answer siite, Not a company that sells jerseys.
You need to call or email the company you purchased the items though.
I am not sure if you are in the right section? Most European soccer fans would have a jersey of their favorite team, which has premier league patches on each sleeve. They would know whether they were ironed on or stitched on.
Whether it's an iron-on patch or a stitched-on one, there should be instructions that come with it. Iron-on patches have a sort of glossy backing that will stick to the jerseys when the backing gets hot.
All premier league jerseys, even those worn by players have iron on everything, sponsor, name and number PL patches. The only thing that comes as standard are the sponsor you have to pay extra for PL patches and name and numbers.