PLEASE HELP! How can stop this form error. Form can be swiped to steps 2,3,4 without any fields having data

Hi All, Just wondering if anyone can help. I am using the Brix Multi step form and im having a couple of issues with its functioning. Currently you can swipe left or right on the form without inputting anything in the data fields and it allows you to go to step 2, 3 etc. Does anyone know how I can address this so the form cannot be progressed until each of the required fields have had data inputted into them?

I’ve included a link to my site so you can see what I mean.

Hopefully someone knows how to address this as nothing I do seems to have any effect.

Thanks in advance!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)