Can someone help me solve this problem?
The SDK is a library from DJI that our application uses to write commands to the drone such as start the rotors, take images, etc. When you launch the application the first time or after an update it is need to be connected to internet so that the application can get the DJI SDK token. Once the token is acquired, it is no longer needed to be connected to internet when you launch the application. However this message may also appear once in a while to get the SDK token but we do not know exactly how regularly.
To get the SDK token, make sure that you are connected to the Internet. If you do not have the SDK token you will not be able to connect to the drone and to perform the mission. For more information: