How do I signin to LibreOffice

I decided to install LibreOffice on my Mac (following a recent answer on this site).

I wanted to ask a question about LibreOffice, so tried to ask on http://ift.tt/1BLA3HX

Apparently I need to sign in to do so, so I tried, but there seems no way except through some other site. I selected Google, and was warned that "OpenID2 for Google accounts is going away on April 20, 2015".

I was not entirely happy with this, as most of the articles I have read suggest this is a bad security.

Is there any way to signin?

PS I am aware this question is probably off-topic, but would appreciate any advice.