Disconnecting the exchange from the J'JO account is very easy.

1. If you have invested in indices or portfolios tied to the exchange you wish to disconnect, you must first withdraw all funds from them. For detailed information on how to do this, you can refer to this article: "How to withdraw funds from a J'JO index/portfolio?".
2. Then log in to your J'JO account. In the upper right corner, click on the "person" icon and go to the "settings" section.
3. Next, go to the "Exchanges" tab and click on the "gear" icon next to the connected exchange you plan to disconnect.
   
4. Click the "DISCONNECT EXCHANGE" button.

Done, your exchange is disconnected.