Arduino Create upload firmware to device (Uno)

Hi, I believe I did it before,
but now I can`t upload to the connected device.
Sketch compiled, Port identified as Com3, device is arduino uno,
How do I upload on Arduino Create? Or select a Port?
Appreciate any help,
thanks, Johannes

:confused:
Johannes bitte schreib im deutschen Teil des Forums auf Deutsch.
Schöne Grüße nach Wien.
Grüße Uwe