Stuck on the start screen after hard reset


I’ve made a hard reset with TWRP, I used advanced wipe and I selected all, then I picked “reboot”->“system” . And now I’m stuck on the start screen. Could you help me please?

Thanks a lot.

I’ve tried many times to holding power button and volume UP and nothing happened, only a reboot.
Then I tried to holding power button and volume DOWN and miracle, the phone boot on TWRP!! After that I followed the instructions from this topic: How to reinstall Fairphone Open OS
I chose the option with the removable sd card because I’ve one and the classic OTA release.