You need to follow the procedures to unlink on both Unipos and Slack platforms.
*Only administrators can unlink Slack
1. Unsyncing from the Unipos platform
・Pull up the screen for linking external services and click "Unlink" under Slack.
・Click "Unlink" again in the pop-up screen.
This completes the Unsync process on the Unipos platform.
2. Then, unsync on the Slack platform.
・Click "Apps" in the left sidebar.
・Click "Manage apps..." in the top left-hand corner.
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・Click Unipos.
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・Click "Remove App" at the bottom of the page.
This completes the unlinking process on the Slack platform.
Unlinking is now complete.