Subscription button pops up

Hi.

My website is https://www.laastrologa.com. On the desktop version everything is ok.
But on the mobile version, whenever you click on any text field, for example in the contact form on this page https://www.laastrologa.com/carta-astral-vedica/, a “subscription” button and field to enter your email (“correo electronico”) pop up, so it doesn’t let you see whatever you were writing.

I have the subscription option as a widget on my sidebar, but I have not activated any option anywhere so that that pop up happens. Actually, even when you click on the text field to write your email on that widget on the sidebar, the same pop up appears. (reply from the plugin support was this: “It can only display in the widget area where it’s added, and doesn’t even contain the type of code it would need to work as a pop-up. So something other than the widget is causing this”.)

Indeed this doesn’t happen when I switch themes. For example, with TwentyTwenty, everything works fine.

I am absolutely no expert in making webpages and my understanding of programming is very limited but I can figure out basic things. So any help would be very much appreciated, I would like to keep this theme.

The page I need help with: [log in to see the link]