Thank you for taking the time to post in the community about this eBay behavior you are experiencing!
We have actually seen resolution of this type of error by migrating into the new eBay integration that was created! You can follow this eBay Migration Guide from our Knowledge Base articles that will show the process you step by step. If you continue to see that error after a successful migration, please reach out to our Support Team so that we can investigate closer in your account specifically!
I hope this helps! 🙂