I was using tinkercad circuit maker just fine. Since yesterday I started noticed that whenever I change something in code editor the 'Start Simulation' won't start. Whenever I click Start Simulation it just opens up a code editor, no highlight, no errors and simulation doesn't start (also the arduino usb cable in editor is not plugging in the arduino). I checked my code with Arduino IDE and everything compiles normally.
Does anyone knows what can be the problem?