I double checked this this morning based on your report and I am not able to reproduce. I also have zero reported cases of this, so this might be a one off issue with your phone.
Barrel twist and Aerodynamic Jump are working correctly on both Android and iOS.
I just looked, you have to scroll down to find them, but mine shows on both. If that doesn't work, you can try deleting the app, restarting the phone, and reinstalling the app.
I would do a DSF on Rimfire at 300 yards, 500, and 700 yards. For my 17 HMR I used 250 yards, and 300 yards before I did a PDM for mine. I wouldn't do them inside of 200 yards.
1) We will discuss this.
2) If you want to laser a single target over and over, you can highlight the Target on the Target Card and it will only update that target with the Range Finder.
3) I can share this so we can discuss sorting by a specific column.