Hi
why the phbot I minimize it and it closes alone without realizing it or presenting some error?
a similar issue happened to me a long time ago,
phbot tray icon was getting disappear sometimes on taskbar
when I tried to login same account, I would see disappearing bot character was already in game.
this may solution for issue,
kill explorer.exe on taskmanager processes tab and restart it on applications tab.
it will appear again in taskbar if has not really crashed