If you wish to remove the Signitic add-in organization-wide, here is the procedure to follow from the Microsoft 365 admin center.
Go to the Microsoft 365 admin center. Sign in using an administrator account.
From the left menu, click Show all, then go to Settings and select Integrated apps.
In the list of deployed apps, locate Signitic and click it to access its settings.
Click on Delete the application, then check the requested confirmation box. Confirm the deletion.
The add-in will then be uninstalled globally for all associated users within 24 to 72 hours.
If you are having difficulty following these steps, we have prepared a summary GIF that visually illustrates the entire procedure.
Please feel free to contact us if you require further assistance.