fix bugs

app/controllers/registrations_controller.rb

 class RegistrationsController < Devise::RegistrationsController
   def new
-    @step = params[:step]
+    @step = params[:step].to_i
     if params[:code]
       @user = User.find_by(confirmation_token: params[:code])
     else

app/mailers/user_mailer.rb

 class UserMailer < ApplicationMailer
-  default from: 'from@example.com'
+  default from: 'notify@venjob.com'
 
   def registration_confirmation(user)
     @user = user
-    mail(to: @user.email, :subject => "Welcome To VeNJOB! Confirm Your Email")
+    mail(to: @user.email, subject: 'Welcome To VeNJOB! Confirm Your Email')
   end
 end

app/views/users/registrations/new.html.erb

 <div class="row">
   <div class="container">
     <h2>Register</h2>
-    <%- if @step.to_i == 1 -%>
+    <%- if @step == 1 -%>
       <%= render "users/registrations/step1" %>
-    <%- elsif @step.to_i == 2 -%>
+    <%- elsif @step == 2 -%>
       <%= render "users/registrations/step2" %>
-    <%- elsif @step.to_i == 3 -%>
+    <%- elsif @step == 3 -%>
       <%= render "users/registrations/step3" %>
     <%- end -%>
     </div>