To update the Elinor theme:
Step 1: Backup your site( Include codes + Database)
Step 2: From the dashboard>>Appearance>>Theme, you need to activate the default template( Ex; Twenty Seventeen theme)
Step 3: Click on the Elinor theme and then click Delete(look down in the right). NOTE: DO NOT delete the Elinor Child theme
Step 4: Return the dashboard choose Plugins then deactive the Ovic Adon Toolkit, Slider Revolution, Elementor and delete them.
Step 5: Return the Appearance menus choose Theme>>Add New>>choose your latest theme version>>Install
Step 6: Return the Plugins menus>>New>>and choose the Ovic Adon Toolkit (Slider Revolution, Elementor plugins arethe same)>>Install>>and activate them.