I suspect the reason you had the older, unchanging data prior to 6 PM in the report is that the time period type selected is "Previous" which will be distinct by "Past" by aligning to the previous period boundary (so, midnight for days, changes the end time) before subtracting the period to get the start time.
No. If it says 'Table "DATAPOINTS" not found;' it means the connection string is not correctly pointed at your old Mango H2 database. It has nothing to do with the license. Add ;IFEXISTS=TRUE to the end of your connection string so that you do not have new mah2.h2.db files appearing.