What are Island Profiles?
Island Profiles are like secondary island accounts on the server, you can either join or create an island on each profile or in easy words, you can have multiple islands. By default you can only create one free island, but if you want to be part of multiple islands, you may need to purchase additional profile slots. Your player data will not reset when switching profiles.
Disclaimer: You can only purchase up-to 5 profiles & island profiles are seasonal and will reset next season.