We are trying to use the sandbox channel to test listings.
We have listings loaded, but when we try search for those listings, they do not appear in results.
Also, when we click the product links from the sandbox myebay section, they go to a http/1.1 error page.
Is the sandbox usable for testing Ebay integrations (we are using Magento 2, M2EPRO module).
Should we just move to live channel testing?