Warning: The product will be listed as a simple product as it has limitation for multi-variation items

There is a limitation on eBay for multi-variation listings: http://docs.m2epro.com/x/FAAJAQ for Magento v 1.x and http://docs.m2epro.com/x/VwItAQ for Magento v 2.x

Your magento product does not meet requirements for multi-variation, so m2e pro tries to list it as a regular (ignoring all options) item.

 

eBay Integration