i tried to calibrate the serovs but all i heard was a little vibration. So i tested them in testServo and they didnt move i tried wiring them the other way round but still nothing happened. Is this a hardware issue or am I doing something wrong? Also the bluetooth LED is flashing red but the programs are definately uploading. But in windows settings it says paired instead of connected

When im trying to add I2Cdevlib as a .ZIP library arduino says a subfolder of your sketchbook is not a valid library