Catelynn Lowell and Tyler Baltierra are breaking down their dispute with their 15-year-old daughter Carly‘s adoptive parents.

The Teen Mom stars—who placed Carly up for adoption in 2009, before welcoming kids Nova, 10, Vaeda, 6, and Rya, 3, together in their adult years—detailed how they fell out with Teresa Davis and Brandon Davis.

According to Catelynn, it all began with photos of Carly that she and Tyler shared from a visit with the teen two years ago.

“It was all of us walking and it was the back of us,” Catelynn described the pic  on the April 1 episode of PodcastOne’s Cate & Ty: Break It Down. “And then Tyler posted one—where it was him, Carly and Nova, and it was the back of them.”

She and her husband, both 33, said Teresa and Brandon confronted them about the pictures even though they had allegedly agreed that it was OK to post. As Tyler explained, “They said, ‘Only the back of her head. If you can’t see her face, we’re fine with it.'”