[Custom unknow item]

Hello, it depends on what client you are using. Good day.

[PATULONG]

Hello, please try upgrading your Platinum skill then try again. 

[Whitesmith skill]

Hello, if you have not tried this, please do. Upgrade your Platinum skills and try upgrading them again. Perhaps it will work. 

[help i can't attack player]

Hello, if @gvgon is enabled then that would be the source of your problem. As far as I remember, if @gvgon is enabled whilst @pvpon too, then players with the same guild cannot attack on each other since @gvgon has been prioritized, try turning @gvgon to @gvgoff and try again.