Failed to connect with Arby Utility

until last night Arby Utility was connecting me without problems and uploading games normally.
now i can’t anymore and i don’t understand how to fix.
do you have any advice?

every time i hit execute it tells me “failed to connect” in loop

I solved it by myself!
once connected I held down the reset button once and pressed “Execute” on the mobile phone while holding the reset button.
I don’t know how I did it, but I succeeded!