I went to the bounty dashboard site, registered and there I tried to open the twitter campaign and I does not work it only gives error messages?

The error would be this:

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Wed May 23 23:27:48 UTC 2018
There was an unexpected error (type=Method Not Allowed, status=405).
Request method 'GET' not supported

How can I be able to join the twitter bounty if the link is not working? Also interested in Filipino and Esperanto translations if you wish. I can submit my works as requested.