Sure, just disable "Allow customer reviews" checkbox on product page in admin panel.
Unfortunatelly due to architecture limits - select and expand are not supported yet.
If it's an urgent security issue, that can impact on the users stores, it's better to reach us at email@example.com. If it's just an issue, please use the GitHub Issues page.
It depends on what do you want to change and customize. You can remove/add homepage elements in Settings. For example you can hide News and show Blog section. But in the case of general appearance it's configured via vode.
Maybe it will be helpful http://docs.grandnode.com/basics-of-creating-plugins
Dragan, it's not an app crash. It's normal behavior that unavailable products are not showing on the public store.
I think this may be helpful for you: http://docs.grandnode.com/how-to-create-services
Thanks for suggestion. Here is the work item. But as Krzysztof wrote few days ago, you can always extend API by a plugin.
We've fixed the error. You can check it on GitHub in mentioned work item.