My page reads "Deprecated..." and script all over, please help!

Hello, can someone please help me. I have an Envato theme called Backpack Traveler. My page all the sudden says “Deprecated…” and a lot of script. I think I have to update my theme but I don’t see where to do that (bluest changed?). I’m sorry I’m not web-savvy! I read to go to dashboard>updates, but I don’t see that. Please help me.

Hi,

Please make sure you are using the latest version theme and your server PHP version is up-to-date or compatible version of the theme.

If the above things not solved please contact the author of your purchased theme, the author will assist you.

How to contact an author to get support for any Item issue or any technical query:

Thanks