If your Slack account got deactivated, it could be because of the following:
– You were inactive on Crowdin for a long time.
– You haven’t completed the setup process in a suitable time frame.
– Inappropriate behaviour (i.e. breaking the rules).
If your Slack account was deactivated, you should have received an e-mail with the full reasoning. If your Slack account was deactivated for one of the first two reasons, your Slack account can easily be re-activated by responding to the e-mail you have received.