[5.2.0.16] Post & DHL Android app not working

One of the most important apps for users in Germany, Post & DHL, version 9.18.0.140 from Aurora Store, does not work on SFOS 5.2, Jolla Phone 2026.

After swiping through the intro screens, nothing happens (normally some kind of register/login page should appear).

The same version of Post & DHL works flawlessly on my Xperia 10 III (SFOS 5.1).

I cannot confirm that. Opening a parcel box via bluetooth failed every time I tried.

10 III, 5.1.0.11

Ok, never tried that because my parcel box still has display and optical scanner.
What I meant is that I was able to login to my DHL account and activate the app.