Update confirmation url in devise_token_auth.rb initializer

config/initializers/devise_token_auth.rb

@@ -60,5 +60,5 @@
   # devise confirmable module. If you want to use devise confirmable module and
   # send email, set it to true. (This is a setting for compatibility)
   config.send_confirmation_email = true
-  config.default_confirm_success_url = "http://localhost:3000"
+  config.default_confirm_success_url = "http://www.comix.one"
 end