Thanks for your answer. I have fixed just one problem, now i can see 6 products instead of 4.
Problem no 2 – To be honest i didn’t understand very much from that link, i am still confused. Do i need to set manually for each product tabs and then link them? It will take me a lot of time. Isn’t there an option to show products with similar name or from the same category?
If not, please show me how to make it for one product and i’ll do for every product.
When i click on ”related products” on your theme settings i can see ”Related products is a sections that pulls products from your store that share the same tags or categories as the same product”