Hi, I tried yesterday to re-take an appointment for my customer. But she already has took an appointment for her daughter and for herself. 

So, I don't know why but I can't choose the client :

her name is "Valerie Nennig" and her daughter" marie nennig"

So, I type "nen" into the search field into the admin pannel. And I only find her daughter (I think because she took and so created an client account first into Amelia). But the mum succeed to take appointment because she was here yesterday. So I checked into the appointment list in admin pannel and she was mentionned. 

I had to take another appointment for the mum with daughter account. I tried too to created another customer account for the mum, but it told me that the email already exist. But I can't choose it. Can you help me ?