My alarm clock woes continue

The alarm is set to go off each day at 6:44 (OK it says 7:44 but we have covered that)

On screen it shows me 07:44 under which there are 5 illuminated lines, then a gap then 2 dark lines (sorry not got chance to screenshot and in a hurry)

Yesterday and today the alarm hasn't gone off at all - it is definitely supposed to go off every day - can you feed that one back too?