Firewall
IP blocking is managed at the server level by your hosting provider; there is no per-account firewall. The panel's Firewall page says so and does not offer a block form — the server has one rule set that affects every site on it, so a tenant cannot add, remove or even list blocks. If an address should be blocked (a comment spammer, a credential-stuffing source) or unblocked (your own office after a mistaken ban), contact support.
Automatic protection still applies to your sites: Fail2Ban acts on abusive addresses without any action on your side. Connection rate limits are server rules your hosting provider sets up; none apply unless they have added them.
Web Application Firewall (resellers)
If your account is a reseller, each sub-account's page carries a Web Application Firewall card with a ModSecurity switch. Turning it off stops the OWASP rule set from inspecting requests to that sub-account's sites — useful when a rule keeps blocking a legitimate application, and worth turning back on once the application is fixed.
The card is always shown; its switch appears only when your reseller plan allows firewall management. If it does not, the card says so rather than showing the firewall as off.
What your reseller plan withholds is not offered. When your plan does not include a capability — databases, e-mail, FTP, DNS, SSL, the file manager, cron jobs, logs — its entry is left out of the menu, and the Remote tab of Backups is shown only when the plan allows remote destinations. The same applies while you are signed in to one of your sub-accounts.
Our support team is here around the clock for anything you can't find above.