Your Magento product does not meet requirements for multi-variation, so M2E Pro tries to list it as an Individual Product (ignoring all options).
There is a limitation on eBay for multi-variation listings:
- The quantity of Product Variations is not more than 5.
- The quantity of values of each variation is not more than 60.
- The sum of quantities of all possible products combinations is not more than 250.
If at least one of the condition is not met, Bundle, Configurable, and Grouped products will not be listed; Simple with Custom options product will be listed as a simple product without variations.