IOTA social networks: unable to join?

[atillla]

Hi all,

I'm studying IOTA for a few weeks now and I'm interested to know more and even participate in the community. But, oddly I can't. Or they are not making it easy, at least.
When you go to their webpage, there's a option called "community" where they link the Blog, slack channel and forum. The slack channel link seems to be expired. The forum doesn't have a "Register" button or any explanation why is it. The twitter account @iotatoken keeps posting but doesn't respond to mentions.

Does anyone know if something is happening?

Thanks a lot!