You can disconnect any linked social account from the connected-accounts area of the app. Disconnecting immediately deletes Artec's access tokens: we can no longer read anything from that account.
Removing Artec from inside Instagram or Facebook's own app settings has the same effect: Meta notifies us and access is revoked on our side automatically.
Post snapshots and analytics from past campaigns are kept (brands you worked with still see the campaign's history), but no new data is read. Reconnecting later restores the same account.