Having a look at the website, it looks like only one person on the 'team' is a qualified Dietitian (Millie). Hayden the Naturopath has a BSc in Health Science majoring in Naturopathy, and the Nutritionist Dee has an Advanced Diploma in Nutritional Medicine.
Millie's bio specifies "I love supporting Sarah and the team to deliver wholesome and nutritious recipes and content to the wonderful Sunee community, and am proud to say that I am the writer behind all of the ‘Hot Topics’ you read on the app." Which sounds a lot like she doesn't get involved with every recipe, and mainly focuses on the hot topics articles.
Hayden is the Naturopath who helped Sarah "to overcome her hormone and skin issues and see her start on this amazing journey she has taken" and "if you have any health issues then check out the Nourish Me pages here in Sunee and discover practical and easily implementable tips to overcome your health challenges naturally."
Dee's bio claims "I'm the Nutritionist approving all the meals and educational resources across the entire cooking project for you all, so everything has been fact-checked by yours truly."
So uh, according to the Sunee website, the least qualified (other than Sarah herself) is doing all the fact-checking?