At the moment there is no way to do eBay customer support on Freshdesk. eBay is blocking Freshdesk messages. eBay has been setup to accept sending messages from our support inbox and Freshdesk was setup properly to use same inbox. Here is an example of eBay message:
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Oops. We weren't able to send your message to XYZ, because the email address you used to send this message, bounces+20379-6cff-wookie_gyn2728uczg=members.ebay.com.au@email.freshdesk.com, isn't linked to your eBay account.
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Somehow eBay doesn't see that Freshdesk is sending messages using 'support@mycompany.com' address
That should be fairly easy to implement.

