Sorry for our late.
Current multi-language & currency menu are just static html to show example.
If you want to set the real menu, you need to install third party plugins.
For the multi-langauge menu, please install wpml plugin.
After install and set your languages, current static html language menu will be replaced with your set languages.
And for the multi-currency menu, please install "WOOCS - WooCommerce Currency Switcher" plugin.
If you install and set your currencies, current static currencies will be replaced with your currencies.
And for the user registration form.
That form content is an default woocommerce registration form content.
Please read the next article.
There are some ways to customize the register form fields.
If you have any other questions, please let us know again without hesitation.
And we'll be very thankful, if you leave 5 stars and feedback to our theme.
Best Regards, C-Themes