Can not get stripe check out to work with WooPress – Responsive Ecommerce WPT

Hello,

You use old theme version and latest version of WC plugin.
I would recommend you to update theme. If your site is live, it would be better to do the update on staging / dev site (a full copy of the existing site). You can try Duplicator plugin to make a copy.
This documentation will help you with theme updating – https://www.8theme.com/demo/docs/woopress/#!/installation_upgrade
Before uploading theme files delete “woocommerce” folder, which is located in wp-content/themes/woopress/ to avoid problems with old files (it will be reuploaded from a new theme package).
Do not forget to update all the required plugins https://www.8theme.com/download-plugins/ (to update free plugins just click on update link from your Dashboard (Plugins > Installed Plugins); to update premium plugins, connect to your server using FTP. Copy extracted plugins folders into wp-content/plugins/).
If you edited php files of theme, transfer changes into a child theme http://prntscr.com/l2gf8h. If you use child theme then child theme files should be updated according to new files.
If you want to update everything on the production site without staging then do the backup of all the files and DB before the update. Then you’ll be able to restore backup if you face any critical error.

Regards