Not sure what you are doing but elfhosted doesn’t need an account. It’s just one of many addons that you install and configure. If you are referring to the API key, you get that from whatever Debrid supplier you are using. If you could give us more details such as which elf hosted addon you are trying to install, there are a few, and what device you are using and exactly how you ended up getting that message. Giving details is important and especially the steps you took to trigger that message.