Slider Arrow over Radio box-Radio Box will not be checked

Hello everyone
I make a slider multi step form so i have set up all it would be working with a single button with next step but i want that the costumer comes directly to the next slide if he clicks on a radio button.
I have overlaid the radio button with the link block (right arrow) so i come to the next slide but if i submit the mail is empty.So the radio buttons will not be checked.
Who as a solution for me i have to bring this project to a end so would be grate ful if anybody helps me here out!

READ ONLY LINK:

https://preview.webflow.com/preview/simons-blank-site-6dd772?utm_medium=preview_link&utm_source=designer&utm_content=simons-blank-site-6dd772&preview=3186df82afe757bbfc617bbc89a331e9&pageId=5fd71778320a0b9b25238d9b&mode=preview