I have a problem, what happens is that my server is hosted by others, and the problem is that when I put the command / tomap and the exact size to put in the item frame, and it gives me a size 10x7 and when I put the image with that size I get the image badly cropped and my previous images

It also happens to me like the #150

For temporary fix on your side, please see this new FAQ entry.

Closing as a duplicate of #86 (we keep only one issue per problem, but thanks for the report!).