Sleep statistics wrong

I have worn my band consistently and I have worn it to bed for multiple nights and it has yet to record my sleeping. Also, the actual tracker piece can easily pop out of the band. I was doing typical household chores and was afraid it had fallen into the washer. Thankfully it had just fallen off in my room....Can I please get some assistance on the sleep tracker portion?

Living loving Lina about DayDay Band, v2.1.6