My personal Figma account is free and I'm using it. I need to migrate some projects from my personal Figma to a private, paid Figma account. However, when I copy and paste the free project into my paid project, Figma shows an error: "an invalid image or thumbnail was removed."
The email address for the paid project is different. However, I also tested it with the free version using the other email address, and it still gives the same error. I don't know how to solve it; I've tried to understand it, but I need help. What should I do? 90% of the project consists of images, covers, and the like.