Unregister old globe number and register a new one

[Imchuchay]

Hi, ive been using spotify premium through a globe telecome prepaid promotion. However, im now using a postpaid globe number and would like to use it to get my spotify premium. However, everytime i register on the globe website, it gives a prompt telling me that my current spotify account is registered under my old prepaid number. Because of that, i cant use my spotify premium using my new post paid number. I can only activate the spotify premium given by the globe telecom carrier through their website.