Problems with new PinePhone

[LinAdmin]

I recently got my PinePhone and installation of Postmarket OS was easy.
However I did not find a solution for the following problems:

1. When booting, the min. 8 characters of the password for unlocking Luks must be entered. Very often the correctly entered password is only accepted after up to 6 trials. Since I typed it very carefully, there must be a bug in the software.
   
2. When the screensaver got activated, there is another password required to activate the system, and there too often several attempts are necessary.
   
3. The phone allows calling and rings when calls arrive. However the sound is not usable. There seems to be kind of automatic gain control which results in a loud noise, more intensive than arriving voice.
   
4. I was not able to use the SMS&Chat app. When started it prompts "Chose a contact". When pressing the "+" key in the top left corner, the stored contacts are shown. However, when I select an entry with a mobile number,  the program drops back to the previous screen asking again "Choose a contact".
   
5. When switching off Bluetooth it gets activated upon next booting. This kind of settings should be permanent.
   
6. Sometimes the screen of an application (like chat) gets locked and wiping up the bottom "^" sign does not put it in background. The only way out is switching off the phone and rebooting.
   
7. I did not find sufficiently detailed instructions to install an email client and a file browser supporting cifs.
   

Any help to solve these problems are highly appreciated.