Why can't I change past logs anymore?

Adri [2nd🤰🥰🇵🇪🇩🇪]

I take my folic acid every night before sleep, and then the next morning I enter it on my log. And sometimes I like to check the past articles or the past weeks to compare how much baby has changed, but now I have just access to the actual date 😕 I cannot go further or back. It's just my cellphone or something was changed on the app? ☹️