Walk doesn’t register. – WoofTrax: Dog walk for charity Review

Since the last redesign I start walk lock my phone screen and go for a mile walk. When I get back and say I’ve finished walking the app has already terminated after a few steps. So that mile walk turns into nothing. The next time I walk all is fine. Then it happens again. I tried to take this question to the app developer, but there is no place for questions.
Review by sprtfn on WoofTrax: Dog walk for charity.