How can i design single product page ?

Using Elementor? I believe you'd have to get a plugin like Anywhere Elementor.

Good day ,Tom

I've already check that plugin. It available on AE pro only which seem doesn't worth to buy just only for single product page. Gp proper page is fine enough if it's properly work on my site.
( https://www.uppic.org/share-0F2D_59AA44EF.html )

Another problem is i Can't set up Woo commerce properly (Ex. Cart / Check out pages)
I understand it's not your job to answer other plugin but if there is something i have to know about set up Woocommerce on GP theme i will really appreciate your help :(

best regards

It looks like you're missing content padding which you can set in Customize > Layout > Container.

As for WC settings - everything should be in their settings, under the "Pages" tab I believe :)

Hey Tom
wish I didn't bore you :(
but another problem is I can't get into cart page.
It's totally blank ! (http://www.fincadebarn.com/cart/)

Thought I was set up WC as many examples out there
Can you have a look on my site for identify the problem ?

thanks

Is that page set as the cart page in WooCommerce > Settings > Checkout?

Yes , it is :(
Tried to re install woo commerce once ' it was no effective result.