Receiving "Bad Gateway" Error message

We have an active event registration and our guests who are trying to register are receiving a "Bad Gateway" Error message when they hit Submit after completing the form.  I looked up this error message on the internet and it seems that it might be linked to your server.  Can you check on this or let us know if there is anything you can do to correct/affect this?  I have just sent and email blast to over 500 addresses promoting this event so we are expecting people to try to register asap.  Thank you!

It's working!  Thank you for your prompt attention to this problem.

You are welcome and we are glad to hear that it is working for you.

Do let us know however if there are any further issues and we would be happy to assist.