According to reports by ET, the Duchess of Sussex and her husband Prince Harry are "frustrated" with the former Suits star's father, Thomas Markle.
"[They] are frustrated he keeps speaking to the tabloids and taking payment for interviews," the source adds.
"I see it in her eyes, I see it in her face and I see it in her smile," he explained. "I've seen her smile for years. I know her smile. I don't like the one I'm seeing now. This one isn't even a stage smile -- this is a pained smile."
"It really worries me," he continued. "I think she's under too much pressure. There's a high price to pay to be married to that family."
Thomas also claimed he had tried to contact his daughter repeatedly, but has not been able to reach her by phone.
"Since the [first] interview [with Good Morning Britain], the phone number that I call doesn't work anymore," he said. "The, I guess, liaison with the royal family never answers back, and there's no address I can write to, so I have no way of contacting my daughter."
"My message [to her] would be, 'I love you, I miss you, I'm sorry for anything that went wrong,'" he added. "And I want to be her child's grandfather and I want to be near them. I want to be a part of their life. I'd like to put our differences behind us and get together. I miss you very much."
This all comes after Thomas bowed out from attending his daughter's royal wedding back in May after he had staged photos to sell to paparazzi ahead of the big day.