If you don’t already have one, go to twitch.tv and create an account if necessary.
If you change your mind about account deletion, they provide a safety mechanism. After 90 days, Twitch will retain the account and permanently delete it.
It’s also possible to deactivate your account and leave all of your personal information on the site, allowing you to use it again in the future. It’s also possible to get rid of your data from the platform and wipe your account completely, although this option isn’t as obvious.
