Featured image won’t resize with Elementor

Hello,
I’m having a problem with featured image size. I’m using Elementor with premium addons plugin.
I want to create main blog page(not single post page). I go to Pages > Add new page. There I add title, then I click edit with Elementor, there I choose Premium Blog panel. Then list of my blog posts appears(blog posts were created with wordpress editor), but featured image is very large(I think it’s showing original size). In Elementor panel I click on Featured Image section. There’s option: Image Size where you can select(thumbnail, medium, large and etc.). I press apply and open that page in browser. The problem is it doesn’t matter which size I select, the image won’t resize. For example if I select thumbnail(150×150) and hit apply, nothing happens.
I would be really grateful if you help me to solve this problem ?? .