Number of images in one image group (33) exceeds the credit (30)

Hi i’m using Newspaper theme ver: 8.1.1 and it has quite a lot thumbnail sizes.

When i click “Send Optimization Request” button it gives “Number of images in one image group (33) exceeds the credit (30)” error.

I figured out that you already doubled “15” default credit probably with thumbnail or theme check but still with the number of thumbnails i cant start optimization and level up.

The page I need help with: [log in to see the link]