Good to have you here! A few notes before you can start, though:

(0) We have a zero tolerance policy towards trolls, marketers, and other people who want to join for all the wrong reasons.
(1) GDPR consent is now mandatory—the possible fines for non-compliance are too hefty.
(2) Please also check your spam folder for the invitation email from Slack.
(3) Mis-spelling your email address won’t sign you up—I do not research possible errors of this kind.
(4) Applying several times with the same email address does not work either; invites won’t be resent. (=> Check the spam folder first.)
(5) If nothing works, try again with a different email address.
(6) Lastly, the password recovery function of Slacks works. (Some people apply several times — see above — with the same email address and seem to expect a different outcome.)