Catelynn Lowell and Tyler Baltierra are no longer in contact with the family that adopted their eldest child. A new 'Teen Mom: The Next Chapter' episode explains why.

In this week’s episode, Season 2, Episode 17, “Two Steps Forward Ten Steps Back,” “Cate and Tyler react to Carly’s adoptive parents blocking them. Mackenzie’s dad suffers a life-threatening injury. Amber asks for a pregnancy test while Gary and Kristina surprise Leah with a car. Cheyenne and Ashley meet to put.”

Teen Mom’ stars Tyler Baltierra and Catelynn Lowell put their first-born daughter, Carly, up for adoption in 2009

Catelynn Baltierra, who was 16 when she placed biological daughter Carly for adoption, has been calling out Carly's adoptive parents on social media for months.

Things are still tense between Catelynn Lowell, Tyler Baltierra, and the couple who adopted their first daughter, Carly, in 2009. The Teen Mom: The Next Chapter star stars have not seen Carly for about two years, Lowell confirmed to Us Weekly.

Fifteen years after placing biological daughter Carly for adoption — and amid a years-long feud with Carly's adoptive parents — Teen Mom star Catelynn Baltierra wishes she did multiple things differently when choosing a couple to be Carly's mom and dad.

Fifteen years after Teen Mom’s Catelynn Lowell and Tyler Baltierra put their daughter Carly up for adoption, they learned her adoptive parents blocked them in an exclusive look at the Feb. 6 episode.