Thumbnail Sizing Issue

Installed the latest theme today and now Thumbnails are no longer showing at the size I specify in my config. it will go no higher than 80 x80 px. I also want to change to full size images and these are resized even smaller.

<img width="1341" height="804" alt="Image" src="https://github.com/user-attachments/assets/a9a5c4b8-8b01-4adf-847c-21b57f8ab08f" />