Need 2 clics to trigger popup on mobile

Hi,

I’ve just installed Popup Maker which was working fine for my needs : a button opening a popup with a form.
However, I realized that it’s not working on mobile ; in fact, I need to click TWICE to open the popup, which will leads to a lot of lost leads I guess..

Any idea ?
Here is a link where you can find the issue : https://www.jeremy-dutheil.fr/jazz-manouche/ (button “Demandez un devis”)

Thanks