Cool-off, self-exclusion or closure
A cool-off period is a short pause of a few days or weeks. Your account reactivates automatically afterwards.
Self-exclusion is a longer block, from six months up to permanent. Account closure is a definitive request to terminate the account.
How to do it
Sign in, go to Settings, then Player Protection. Choose the option that fits your situation. The change is applied immediately.
If you cannot access your account, contact support by live chat or email.