Hello Knguyen2011,
I am sorry to here about your experience with the SPOD App. Recently, SPOD has increased it’s app speed to assist in the syncing of products. For additional support on any issues, Please contact us at https://app.spod.com/feedback.
You can also find help articles on the SPOD App in the Help Section. Check out this article: https://faq.spod.com/hc/en-us/articles/5878852989852-Problems-with-Synchronizing-Images-from-SPOD-App-to-WooCommerce
I hope that this helps. Again, we apologize for your experience with the SPOD App but we are always here if you need assistance with anything. Thank You!