Users are able to spam my landing page on required form field

Hi guys, as the title suggest. Users are able to spam my landing page on required form field by putting space into the form. Need urgent help to overcome this. Is there any script available to prevent user from putting space as the only letter in the form. I have also found out that this is happening on all of my landing pages.

Landing page url : https://solar-commercial-industrial.raygosolar.com/

Thank you.

You can try enabling validation for email address and phone number.

Also, I noticed that in your menu (top right corner of links) when you put your mouse over the links, they ‘disappear’ / turn into a gray color.

Jan 4 Capture