Hey, looking for a bit of help.

Just purchased a rocket donation which i want to use to get iptv stalker working on ivue/kodi on my android box. I got my donation email through but im lost on the next steps.

I followed instructions to "change my mac code" but if I use the current mac code on my iptv stalker add-on, I get the message that it already exists.

Any advice? Im a complete novice when it comes to this