Hey brother! Of course, I'll help you out. For some reason, I hadn't seen your mention, and I just found this thread purely by chance, lol.
There are a few things you should change/consider:
As you rightly mentioned, your landing pages should be translated into Spanish since all of the traffic on that site is Spanish-speaking.
On the other hand (without having seen the landing page, technically speaking), I think the example you gave is a bit off. My landing pages had steps like:
"Attention, on this site you will see women looking for quick sexual encounters. You might come across your neighbor, coworker, or supermarket cashier. Do you agree to keep discretion and not reveal photos or details about your encounters with them?" (yes/no)
"These women are only interested in meeting men over 21+, are you over 21?" (yes/no)
"How far are you willing to travel for a date?" (dropdown with 3-4 options)
"What age range do you prefer?" (dropdown with 3-4 options)
etc. etc.
The idea is to make the user believe they're about to have a real date, asking them questions that seem real to get them hooked, and by the time they finish the steps, they have no choice but to register due to the interest/time they've already invested to reach that point.
I don't know how you're handling all the tracking, whether you're using a custom domain, etc. All of that can also have an impact.
EDIT: I forgot to tell you NOT to get discouraged, you're on the right track. Keep experimenting, and you'll see that you'll soon get your first conversion