Glow fertility indicator

Kate
Hi everyone, has anyone ever had glow change their suggested fertility window, but retrospectively so it's too late to try. 
Happened to me this morning and I'm not sure if it's due to the information I was putting into the system or a technical glitch with the app. 
I'm confused because I had a temperature spike on Friday and it's stayed up, but the app is suggesting my highest chances are Friday and even higher Saturday! Originally they suggested Wedensday and Thursday were highest, which would ring true with my BBT
Any help much appreciated ladies.