ALT CODES!!

[Yux]

I think you're trying to do characters that aren't in the habbo system, http://www.habborator.org/tips/ for all the ones you can use

Make sure Num lock is on

[shizzle]

Well durr i do the commons eg black heart alt+159

[mrman10]

™ ¥ •
Works fine?
If you are trying it on forums then it might go weird,
But there is an option if it still doesn't work:
Go to a site with pictures of the alts, just copy them.

[shizzle]

Lol good idea

[Chippiewill]

if it hasnt been set for the font then it would come up as ?