[Plugin: Mobify] seems doesn't work correctly

I setup and launched my blog https://www.digitalking.it with Mobify and also the deploy with custom domain; i encountered 2 problems:

1. it seems sometimes working and sometimes no (it will redirect to https://www.digitalking.it/en; which is not the mobile version of the blog).
I don’t think it’s a DNS problem, i correctly setup the https://m.digitalking.it to point to digitalking.mobify.me (i also installed the Mobify plugin)
Could anyone that have mobile can test if it’s working https://m.digitalking.it?

For having it back to work i must re-save the settings on Deploy page in Mobify or re-save settings in Wp plugin page of Mobify.

2. The detection has not the green button; but i correctly pasted the script lines into head of my theme.