The recent update deleted all of my data (and everyone else’s). By logging into my Polycents account again and then doing a local data restore, I was able to get back all data 2021 and older, but was still missing the last 10 months. Emailing their tech support wasn’t helpful- they just suggested that I try restoring data, etc- things I had already done.
Based on the developer’s reply to my App Store review, I signed out of my Polycents account and then logged in using Apple ID. I don’t recall ever logging in in the past with my Apple ID, but I tried it anyways. This helped- I am now only missing my most recent data (about a week’s worth), instead of 10 month’s worth of data.
You need to add the ability to merge data (without duplicate records) between a Polycents account and an Apple ID account ASAP. Once you do so, you need to email your user base with specific instructions on how to merge the data between the two accounts.
Unless you do this quickly, you will lose your credibility and we will all be switching to a different app.