Pee is my world name and I just want to keep my server professional. Pee came in immediately as I downloaded the plugin.

Thank you, this really helped! <3

To remove the world name edit the fields chat.format and tablist_modification.format in PowerRanks config.yml and remove the [world] (&a[world]&r) tag from them.

Default chat format format: '&a[world]&r [usertag] [prefix] [subprefix] [player] [subsuffix] [suffix]&r: [msg]'
No world name chat format format: '[usertag] [prefix] [subprefix] [player] [subsuffix] [suffix]&r: [msg]'

Default tablist format format: '&a[world]&r [usertag] [prefix] [subprefix] [player] [subsuffix] [suffix]'
No world name tablist format format: '[usertag] [prefix] [subprefix] [player] [subsuffix] [suffix]'