Hello,
To create back up you need download all files to your PC and create a back up of the database. Also there may be back up feature in your hosting control panel.
Now I’ve updated Revolution Slider plugin for you.
Concerning the warning in wp-admin panel, you shouldn’t worry as it doesn’t affect your site work.
Please note we’ve recently released IDStore theme new version – 3.5. Please updated your theme.
How to update theme you can watch in this video tutorial – it’s about Legenda theme, but the process is identical.
Thank you.
Regards,
Eva Kemp.