Poolmath app bug?

If I don’t enter a test result (e.g., I don’t do Ca hardness everyday) Poolmath shows me the results of a previous test. In my case, it shows a result from a month ago, not the most recent test which was 5 days ago. Is this a bug? If so, it means that the CSI calculations are off.
 

proavia

LifeTime Supporter
TFP Guide
Feb 6, 2015
1,993
Chandler AZ
PoolMath will use the most recent data. If youdon't enter a new reading for CH, it will use your last CH reading.

Are you using the free or paid version? Did you enter the current date/time of your last testing?