Plesk
Plesk is control panel server software, similar to Webmin.
Login does not work on Chromium on Linux. Use Firefox.
Plesk accesses a lot of ports when running. It may be simpler to disable the firewall while working with it.
Howto Change Admin Password
Password should be from 5 to 16 symbols and should not contain login name, whitespace, quotes or national characters.
cd /usr/local/psa/admin/bin/ export PSA_PASSWORD="newpass" ./ch_admin_passwd
This will take a few seconds to run. Afterwards, the password is available in /etc/psa/.psa_shadow
