Hi Marcial,
Thanks for getting in touch and I hope you had a great weekend!
I think we can resolve this by making the height of the calendar navigation taller to avoid being so close to the top of the screen.
Pleas try adding this to your theme’s style.css file or by pasting in the Appearance > Customize > Advanced CSS screen:
#tribe-bar-form {
padding: 130px;
}
That should push things down a bit so the datepicker remains on the screen. Here’s a screenshot of how that looks when I test it out. Let me know if it works for you as well!
Cheers,
Geoff