Okay, Thanks
1) Theme Upload theme: I do not if you customized your site yet. So I would like to send you the method to update theme.
I would like to divide into each case for you:
1 - You customized theme on Parent theme => Of course you are not allowed to update any more. When you update theme, your customization will be lost (On our update version, of course we do not have your customize so your files will be overwritten => Lost)
2 - You customized theme on Child theme => You can free to update theme to the latest version. However, you should backup all your customization files to make the safety by following these steps below:
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 Techone theme and then click Delete( look down in the right). NOTE: DO NOT delete the Child theme
Step 4: Return the dashboard choose Plugins then deactivate the Toolkit, Slider Revolution, WPBakery Visual Composer 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 plugin Toolkit (Slider Revolution, WPBakery Visual Composer plugins are the same) >> Install >> and activate them.
Please do it and let me know.
2) Upload child theme: DONE
3) Update woocommerce database: DONE
Pls check then tell me your result
Regards,
Yame