OT: Cannot reply to post

I registered, logged in, and sent my first post yesterday. ('Does the used car I want exist?')

I had a helpful reply and I simply wanted to respond. When I do (using the only link I see, namely 'Reply with quote') I get asked to login. And after doing that I get a page with '404 - Page not found'.

I repeated this several times last night and again today with same result.

I tried the alternative of logging in BEFORE I hit the 'Reply with quote' link, again with same dead end.

Is there an email contact for the web administrator please? All I found was a general Contact link for the entrire RAC.

I'm hoping that THIS post doesn't suffer the same fate.

Edit: Happily, it didn't. It's curious to find that there is also a 'Reply' link on this one, as well as 'Reply with quote'.

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Terry, East Grinstead, UK