Starting from scratch. New install of WP and WC. I've done very little styling yet. Uploaded a couple of ebook products. Now I'm installing the plugins that I like. Apparently they have changed something because I got a warning not to activate Accordions Pro. The free version of your utility seems to work fine. Is there an update planned for the Pro version? The high performance order storage is now recommended by WooCommerce so I'd rather stick with it. I'm rather new to WP and WC.
If you look at the site, be aware this serves a limited audience by design. It is self-hosted on a NAS. Ergo, it may be slow at times.
Should also mention, yours is not the only plugin I'm having this compatibility issue with. Seems to be something new with WooCommerce. Anyway, let me know if you can update the plugin to work. I really like the features and look forward to using it.