The Printful plugin was working fine until today – yesterday the site was down, and the host might have changed something that stopped the plugin from connecting to WooCommerce. I revoked the old API, created a new API and added that info to the Consumer Key/Secret on the Printful site, but I still cannot get the store to connect:

Last sync error: Error: Invalid response from your WooCommerce store. Please make sure your site is working and no plugins are blocking WooCommerce API access

Thank you for any advice you can give.

The page I need help with: [log in to see the link]