Restricted means LightDrive has limited selected services while an action is required.
Examples include an expired trial awaiting billing, a temporary billing override, an administrator-approved policy reinstatement awaiting your confirmation, or another account-protection condition. The Vault quota can be limited to 1 MB and outgoing mail can be disabled.
Open Settings → Plan & Billing and read the status card. It states the reason, deadline, and action that applies. Complete that action or contact Support; do not create a replacement account to bypass the restriction.