[Solved] Blynk usb connection

Hi guys,
please help me.
I’ve just try to connect my Arduino ONE with blynk app.
I works fine only after cheked blynk connection in DOS.
If I close this window, it don’t work.
Could someone explain why? Thanks

That is how it is designed to work, via “DOS”. Close the Window and you close the bat file that makes the connection.

Thanks Costas for reply.
I used Blynk Usb serial exemple.
It should work after I changed COM port of my Arduino, but nothing.
When I close Dos, it doesn’t work.
What can I do?

Don’t close the DOS window.

I’ll check my USB notes and advise asap.

Any news?