I have a problem (make a push button that control 4 pins)

Hello friends how are you?
I want to ask you about if I can make a push button that control by 4 pins in board thank you…

If you mean a button widget to control four pins then yes.

Attach your widget button to a virtual pin then in the corresponding BLYNK_WRITE(vPin) function you control your pins using digitalWrite commands.

Don’t forget to define your pins as ouputs in void setup using pinMode statements.