You can reset the server's password from your billing account:
Knowledgebase
Do you store additional log files / back-up files of my server?Nothing works on the server. When I am trying to run anything, I get the "No space left on device" error.I need KVMDomainsBackupPHPVPS-related questionsDedicated serversDDoSHow to add a cron jobMySQLHow can I access the server via SSH?How to change the server's passwordSome users have difficulties opening the websiteA hosting control panel FASTPANELI cannot access the server via telnetHow to add domain names and IP addresses in the hosts fileTimezone setupHigh memory usage by Hyper-V virtual machinesCreating an FTP account