You can send an email to info at ungleich.ch.
You can send an email to support at ungleich.ch.
Feel free to join our Open Community Chat. For support requests you can ping us in any of the public rooms and we will create a private room for you.
There is a dedicated matrix room #datacenterlight-status:ungleich.ch as well as Mattermost channel for status announcements.
You can use any regular matrix account to connect to our Matrix. For Mattermost you need to create an account.