Total noob - openvpn on vps - how to change admin password

[redfirebrooks72]

Hello,
I have installed a docker openvpn on my vps.
everything is running fine but how to change the default admin password ?
in User management / user permissions I have the admin user, but where i change the password it looks that is has no effect. it's always the same default password I have ti use to connect.

and secondary question, how can I change the time zone ?

please help