Linden Lab Official:I'm having some trouble getting the Registration API to work.
Help exists: It is out there
Are you using the Registration API? Are you having some trouble getting it to work right? (this is understandable; it's complicated stuff)
We recommend checking here for a list of third parties willing to provide support for the Registration API, in most (or all) cases for some nominal fee.
Why don't you just provide the support yourselves?
As stated in the Registration API wiki page, the Registration API is a beta release; you're helping us to understand what's broken or needs better documentation, so we can fix it.
Also, our developers are focusing on building the replacement registration system even as you read this. We're hoping to have a reliable, robust registration system that works for all of you.