Hi @stegonomic ,
Thank you for reaching out. I can completely understand how this may not be ideal.
To share some additional insight, third-party apps such as TikTok are directly supported by the app developer. Due to this, we would not be able to access the app to investigate why products are not syncing as expected. As I can completely understand the impact of this, I would encourage you to follow back up with TikTok Support to have them complete additional digging.
If you have any other concerns, please feel free to let me know.