If you think someone else gained access to your account, treat it as a security issue rather than a normal sign-in error.
- Change your Muviber password immediately; if you cannot sign in, start password recovery.
- Secure the email account linked to Muviber as well, because it can be used to recover credentials.
- Review the profile information and recent activity you can verify, and note any change you do not recognise.
- Do not follow links or instructions from people claiming they can "unlock" the account.
- If you find unauthorised activity, keep useful information and use Muviber's dedicated safety and reporting procedures.
After recovery, do not reuse the old password.