We are having the same issue with attendance.  The registration them checks someone in and when they check back it is unchecked. Sometimes refreshing the page helps but surely you shouldn't have to do that all of the time. 

Please make a printable attendance sheet available in the future. We also would like to have that so that we can see each day who has been there and who hasn't. Most of our people won't be using a computer or phone for attendance but will be using paper. We have a registration team that takes care of data entry for attendance. May be old school but it works for us. Thank you!!