Hi Wolf, the route I took for the contact was:
- Go to eBay UK (there may be differences based on country)
- Using the Feedback Forum, search for eBay member
- In the Feedback Profile page, click the "Contact Member" link at the top right of the page
This gives a page with an option to "Select and Item" or tick a box for "This is not about an item".
Choosing the first option ends up with the "Too many emails ..." result but the second option alows the direct contact.
I have no idea how the "Too many emails ..." response works. I guess it could be an option available to (some) sellers under certain conditions.