Known issues

• Due to the fact that Discord bots are not allowed to change permissions for admins, server admins will still see all text channels (IMHO, not even an issue, but still worth mentioning).
• Messages in the channel can be cached in the app, so the user can still see it even when it's cleared on the server. These messages will disappear after the Discord app reboot. For now, I didn't see any solution to fix it - if you know any workaround, please post it in issues.