Hello mmoustakas,
Welcome to the Azulle forums. Did you re-install the driver like is mentioned above ? Also you can perform a factory restore in the unit, that will reinstall the Operative System, giving you a clean and fresh Windows 10 to start again. You can follow the instructions of how to make it here:
https://azulletech.com/topic/factory-restoring-your-azulle-3-device/
Let us know if you need further assistance.
Best regards.