email validation

I’ve got a piece of code that validates email. I need to disable that validation, so the user can type a cellphone number instead of an email. What I’ve done: Step 1: Remove @ to accept the number. I’ve searched in *.js files and change code from

i=/^(([^<>()\[\]\\.,;:\s@”]+(\.[^<>()\[\]\\.,;:\s@”]+)*)|(“.+”))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
to this i=/[0-9]/;

Step 2: I’ve changed the type to number but it doesn’t work. this is the code:

<input type=”number” value=”” id=”wcwl_email_1662″ name=”wcwl_email” class=”wcwl_email” placeholder=”Email address”>
After doing these when I enter a cellphone number instead of an email I receive this error message: “I’m afraid something went wrong with your request. Please try again or contact us for help”

this is the link that I’m working on: https://atlantic7.ir/nikeorange/

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