I spent a lot of time, coins, and yocash decorating my room and when I went to save, the room would not save at all. I tried backing out, doing it again, but the coins & yocash I spent is still gone and the items are not in my inventory.

Hey YAYAGODDESS, I hope that this issue was resolved by refreshing the game.
In future, if you encounter this problem please always try clearing your browser cache and refreshing your game.

Clearing your cache resolves many common issues with YoWorld by removing old information stored on your computer regarding YoWorld. Plus, it will ensure you have all the up to date game information when something has recently been fixed. Please ensure you do not have YoWorld open when doing this.

If that doesn't work, your best option is to submit a ticket via the in-game Help button!

Tickets help the Vikings, help you in two ways: first, they can openly discuss your account details in private conversation with you, and second, tickets send them details that are specific to your account and how you play YoWorld, and these details help the Viking Team, to look into what you're experiencing.

Hope that helps