HELP!!

I amde this flyer for omsoen yesterday and needed to add some texts -- the SYDNIE font disssaperead off my pc

I searched google for sydnie font and it seems that alot of people have that problem that it disappears of your system...

Anyone know whats going on -
Is that a abd thing that it disappears???

Please help in anyway

I need that font and I forgot where I got it also so if oyu can help with that