You need move style changes into custom.css file.
How to create custom.css you can watch in this tutorial (it’s for Legenda theme but the process is the same).
Also update all required plugins https://www.8theme.com/download-plugins/ .
After you move style changes to custom.css file you can update the theme. Before update delete “woocommerce” folder in wp-content/themes/royal directory, it will be reuploaded from a new theme package. Also don’t forget to create a back up before update!
