Hello,
Please, create new topics for the new issues to avoid misunderstanding.
1) We can’t make changes to the registration form, it comes from WooCommerce and vendor plugin. Our theme just displays it in the mini-popup and we don’t have options to change the form itself. So, if you want to make any changes there you can either submit customization request here or do it by yourself if you have appropriate PHP, JS skills. Use child theme for additional customization.
2) Edit slug of your page if you want to change that https://prnt.sc/19g81fs
Regards