Add controller page

docs/extension/controllers.md

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+---
+sidebar_label: '🔐 Controllers'
+sidebar_position: 2
+description: 'LUKSO Support: Universal Profile Controllers'
+---
+
+## What are the controllers of the Universal Profile?
+
+Each Universal Profile within an extension holds a separate private key to send transactions on behalf of the user, e.g., controlling it. Such controllers can be exported, added, or removed. The controllers can be found within the **Controllers** window of the extension:
+
+<img
+    src="/img/extension/controller-window.png"
+    alt="Controller Window"
+    width="400"
+/>
+
+## Can I add 2FA recovery to an existing Universal Profile?
+
+At the current state (11th January 2024), the 2FA recovery method from LUKSO can only be added during the creation of a Universal Profile on [UniversalProfile.cloud](https://universalprofile.cloud/).
+
+:::info Upcoming Update
+
+Due to the [Controller Incident](./incidents/controller-recovery.md) of the Universal Profile Extension in January 2024.
+
+:::
+
+## Can I use a regular wallet to control my Universal Profile?
+
+As a developer, you can connect a regular wallet to the network where the Universal Profile was deployed and **manually add its EOA** as a controller. You will then have to send all transactions through the [Key Manager](../../standards/universal-profile/lsp6-key-manager) of the Universal Profile to execute them as your persona. However, we recommend directly using the [Universal Profile Extension](/install-up-browser-extension) to interact with dApps on LUKSO.
+
+## Can I use an existing EOA to control my Universal Profile?
+
+You can add any new or existing Externally Owned Account as a controller to your deployed Universal Profile of a specific chain. This also includes already existing keys from wallets. However, please remember that your previous assets and token remain on the EOA address.