It is working fine on my test site.
Please make sure you are using latest version of PHP on your server by referring the information provided in the following pages.
Also could you please share me your site URL where it’s happening so that I can troubleshoot it?
You can add profile link in the menu bu creating custom link menu item or use below plugin to add it.
I am not sure what you meant by WordPress style but you can change any style by using Yellow Pencil editor as described in the below page.