Carly was adopted by Brandon and Teresa, who have maintained an open adoption relationship with Catelynn and Tyler. They have shared their journey and the emotions surrounding adoption throughout the series, often discussing the impact it has had on their lives.
Catelynn & Tyler have been having difficulties reaching out to Brandon & Theresa but seems like there’ now been an update on the situation.
Brandon & Theresa put the foot down

According to Tyler Baltierra, the star of Teen Mom: Next Chapter, Carly’s adoptive parents, Brandon and Theresa, have asked him and Catelynn not to mention them or Carly any longer.
Additionally, some reports indicate that B&T have also asked them not to talk about the adoption at all.
“I understand not wanting their names mentioned. But not wanting them to talk about adoption at all is ridiculous. B & T knew their story would be public when they got into it. They could have asked their faces not be shown and used an alias but they didn’t,” one fan said of the situation.