My board is connected via usb and the on light is green and LED blinking but Arduino Create repeatedly says they cannot find my board. Earlier I was using my UNO with arduino create with no problem. Help!
What is the exact wording of the error you're getting?
Make sure the USB cable is fully plugged into your Uno and the computer.
Disconnect any wiring from your Uno.
Try a different USB cable. Your cable might be damaged, defective, or charge-only.