Compatibilty issue with Woocommerce Subscriptions!

There is a conflict with this plugin and woocommerce subscriptions that prevents a subscription order AND renewal from being processed. There are no error logs that result, but the symptom is that a subscription order note for purchase or renewal (or any action, including activation or cancellation) loops over and over again, thousands of times, until the server runs out of memory and crashes. A php memory allocation error is printed in the Woocommerce action logs, but no stack trace etc in any log that I have found (including with wordpress debug enabled).

I have reached out to support on their chat line, but am also posting here in case someone else runs into this, and to get as much visibility as possible for a resolution. Disabling Feed for TikTok Shop returns subscription functionality to normal.