Question 1: My website needs fixing: the webshop does not show the products. Why is this?
Answer 1: Very likely some fatal error appears on your site. Enable WP debug mode to find out what error you have. What version of theme and WooCommerce plugin do you use? Make sure that the current version of the theme is compatible with the WooCommerce plugin version. You are using the child theme. Did you do any changes in child theme files that may cause this issue? Try to enable the parent theme and check if the same error persists even with the parent theme.
Question 2: In response to your answer, please help look at my website. I do not know the answers in full. I have bought new support in action for this fix.