New version turned its back on old users

I used this app heavily the first year. I highly recommend it as it helped timed breastfeeding sessions, time napping, and time between changes. All of the things that blur together the first few months.
However, the new "optimization" upgrade erased all data for the previous users. The appts, the immunization tracking, on top of milestones, and height and weight inputs GONE! There is no way for me to get this information back.
I am sure their cloud service is supposed to give everyone a back up, but there was no warning, no curtesy, nothing to the old users. I gave their new version 1 star because of this.

Samurai Waffles about Total Baby Pro, v4.5.5