Another reply to message problem

[anturagemsk]

Access Denied

You don't have permission to access "http://www.ebay.com/cnt/ReplyToMessages?" on this server.

Reference #18.bcde4568.1634157283.6232d435

I can answer only short message. If message is several lines of text then permission error

[fab_finds4u]

You're replying to a message that while you were typing  the post was removed.