NikaTime works either within Slack or Microsoft Teams. This means that, from the login credentials down to the list of available users, all this information comes from either your Slack workspace or your Microsoft Teams team.
Since we don't store any user or team information (you can check our Privacy Policy), and the login to the Report Center is done through either Slack or Microsoft credentials, we currently have no way of associating your Slack and Teams information.
We recommend opting for one of the platforms for your team, and only activating the NikaTime subscription and time-tracking on that platform, to avoid duplicate and scattered records.