Newbie here! Anyone else having problems with the C25K app. I have it on my Samsung S3 mini. I've had a few issues and then this morning was about to start W4R1 and the app refused to let me sign in! It came up with a log in failed error. I have reported this problem previously to NHS choices, but no suitable fix suggested!!! I had to download a different app so that I could complete the run, then when I came home home I reinstalled C25K using my daughters e-mail details (problem is it loses all your progress). It's extremely frustrating because I am thoroughly enjoying the programme and am eager to try to complete it. (I HAVE NEVER, EVER, RAN IN MY LIFE!! SO AT 50 SOMETHING THIS IS A PRETTY BIG DEAL) I just wish the app was more reliable because it's a massive boost when it does work. Any suggestions welcome.