Hi @CNStoneOak ,
First, check the battery level, check for debris in the propellers, and calibrate the drone. If your drone is still flying to the side, you may need to reset the trim using the Petrone App, available on the Play Store and App Store. For the Blockly issue showing an error, if you could attach a screenshot of the code that you tried to run it would be very helpful in diagnosing the issue. Thanks!