You really can support your team nly by keeping your fingers crossed. 😉 The teams needs to work on their own throughout the day. This includes assempling the robot in the beginning as well as any necessary coding.
If the team runs into any problems, the judges are the first point of contact. They will help finding solutions to any technical, i.e. non-coding-related, issues. If they cannot help, they will fetch the coach who can then give support in the presence of a judge.
We recommend all teams practice ahead of the competition day what to to if the robot doesn’t work. (Hint: Checking that the cables are connected correctly, and restarting the robot, the app as well as the computer will help in most cases!)