Thank you for your question.
In this situation I recommend you to check your Navigation menu in Shopify. (from your Shopify admin-> go Online Store->Navigation)
It seems that some links are hardcoded.
Maybe in the Navigation menu, when you click on the section and then click 'edit' you've got links there instead of pages with products or collections etc.
What you're recommended to do is to change all sections with links into the pages they belong to and save the changes.
I hope this information was helpful for you.
Please, feel free to contact us if you still have some additional questions via LiveChat or email firstname.lastname@example.org
Thank you and have a great day.
Langshop support team