Thanks for your answer 
I never used microG before, i tried, and it’s not working at the moment.
What i’ve done :
- Downloaded & installer the four apk.
Services Core / Services Framework Proxy / Store (FakeStore release) / DroidGuard Helper - Putty as root : ln -s /home/defaultuser /home/nemo
- Opened microG settings, in “auto-check” tab : checked the second line “The system allows signature spoofing” but the 3rd 5th and 7th checkbox can’t be checked.
4.(re)installed Discord from “Store” - Still the same issue with recaptcha check & google services.
Did i do something wrong ? Thanks … 