Add note: Pro Cloud Plan clarification

Author: marqdevx

content/hardware/04.pro/boards/portenta-x8/tutorials/out-of-the-box/content.md

@@ -53,6 +53,7 @@ Once it is connected, you should see the Wi-Fi status bullet in the bottom left
 
 ### Register the Factory on Foundries.io
 
+***The integration with Foundries.io requires the Arduino Pro Cloud plan, contact us at [Arduino Pro Contact Inquires](https://www.arduino.cc/pro/contact-us), or learn more on the [Arduino Pro Page](https://www.arduino.cc/pro/hardware/product/portenta-x8)***
 Go to [https://create.arduino.cc](https://create.arduino.cc) and click on portenta-X8 board manager, you will get prompted to set a new `Factory` name if you didn't have one before. You will not be able to be change the name later, so use one that you can remember and write easily.
 
 ![Arduino Cloud integration](assets/cloud-main.png)