I have taken over role as scrum master of troubled project. The team size is 20+, it contains backend, UI, QA team. They are following scrum method. There is huge number of defects open, stories are getting spill over. Customer has strict timelines. they are following 2 weeks of sprint cycle.
Not sure how to start . they have tried all combinations like splitting the team, dedicating one sprint to fixing all defects but not able to manage. Lot of pending work / technical debt.
Any suggestions to improve the situation ?