Endomondo Sports Tracker/ switching to iphone

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I'm having trouble with my Endomondo Sports Tracker since I switched to iphone this week. Android app was great, worked great, never failed! It seems hooked up to MFP like before, and the app seems set and working. Although it won't sync. to MFP. It has once over the 4 times I used it. Only today it "spoke to me" and updated me with updates during use. It seems to be working on the phone, and no sync as it did reliably before. My daughter put the app on her new iphone and same thing, though she is a first time user without a previous account. Any tips?