Hello,
I managed to install a yunohost instance on my Rasp pi 3 and now everything work like a charm.
However I have a question. I installed Yunohost on Raspbian with PIXEL and I wanted to redo an install with Raspbian minimal edition to squeeze a bit of storage space however I have a question 
- Is it possible to format my sdcard, reinstall raspbian + yunohost and choose the same nohost.me name for my Yunohost instance that I’m using right now ?
Thanks
alternative install raspbian/
Netinstall https://github.com/debian-pi/raspbian-ua-netinst
(Possibility to install Raspbian for Rpi3 since September 2016)
or Raspbian without https://downloads.raspberrypi.org/raspbian_lite_latest
yes, you can.
Also you could creat a another free dynamic DNS to confirm you ip before you erase your partition.
It will a alternative during your reinstall if it’s difficult to reinstall the same nohost.me name for my Yunohost instance.