@eternalgrace94 said in M5stick C compiling issue: Usually when press run, the code will upload and the device will run the program accordingly, but as of recent, I have to reboot the device so it will run the program Anyone knows a solution to this, or is this device damaged? I get this from time to time especially when im updating code several times in quick succession, and yeh, I just do a full restart. If you have issues connecting to the UIFlow Website it may be due to server load as there are alot of people trying to access the server.