shop lift liability?

After I had lived in our home for several years and had our pastures fenced but not our front yard and orchard behind our home. I had changed home owners insurance companies and without my knowledge they came to our home and walked our property while we were gone. Then I get a letter in the mail, they said I had to put a net around our kids trampoline(which they hadn't used in a couple years), and to remove some ivy growing up a concrete wall or I'd get dropped.