New mother Katelyn Esmonde told Vox that following Dumaplin's sleep programmes had helped her significantly, but "it's really hard for me to separate what I know about her now from the sleep advice that she gives".
"I can't square that with a person who puts children in cages," she said.
Dumaplin confirmed to the publication that "between 2016 and 2019, I made a series of donations (totalling US$1078) to the Trump campaign".
"As with many citizens, there were aspects of the Trump administration that I agreed with and some that I disagreed with," she said.
Many fans have vowed to boycott Taking Cara Babies, and some have also requested refunds.
Other popular parenting accounts reportedly posted statements on their Instagram Stories to note they disagreed with Dumaplin's beliefs.
