When someone try to create a new user, after filling the form of personal data (nick, email,...) you've a new a form in which you can add an offer but when you click the "add an offer" button the page resets and nothing happen. You need to click "add need" and after this a button called "create a new account" appears.

This happen, at least, when you try to create a new user in XarxaECO Tarragona.

I think that althought is possible to create an account following this steps isn't user-friendly and looks like a bug.