Hello,

1. Theme labels can be changed or translated to your language with poedit software which is native wordpress way - following guide may be helpful http://code.tutsplus.com/tutorials/translating-your-theme--wp-25014 (read from point 3) or any other plugin for translation such as Loco translate plugin https://wordpress.org/plugins/loco-translate/ and here is beginners guide https://localise.biz/wordpress/plugin/beginners

2. You can go to edit some existing Product or add a new one >> and then leave empty Price field. In that case Add to cart button won't be shown and you can add product price within the content. By default, WooCommerce plugin works on that way and if you want to change some features, that can be achieved only with some custom coding.

Unfortunately, we are not in a position to accept any custom work, because we primarily need to focus on providing Theme Support to all customers. We hope you understand.

In case you are not familiar with programming, you could hire someone to do this for you. You could look for someone who you can hire for this kind of job at the following link: - http://studio.envato.com

Thanks for understanding.

3. Could you please provide us with your wp-admin credentials so we could inspect it closer? 

Hello,

Try to add this css in Elated Options >> General >> Custom CSS field:

.single-product a.button.product_type_simple.add_to_cart_button.ajax_add_to_cart {
    display:none;
}