If your sweepstakes casino account gets locked, the first step is to check your email for any communications from the casino that might explain why your account is locked. Often, accounts can be locked due to verification issues or security concerns. Contact the customer support of the sweepstakes casino through their official channels such as live chat, email, or phone. Provide any required identification documents and follow their instructions to regain access. Keep all communications polite and provide any details they might need to assist you effectively.