Companion App freezing when finalizing install - 1st connection

reinstalling a new config on a new mini PC
everything works great. I already connected 4 android devices using the companion app.

While connecting the 5th one, i see the HA adress, select it, put login and password, its works, then i need to connect 'pressin the button at the bottom right → the app is freezing

i tried to reboot several time companion, try to update android (seems it is up to date) reboot the VM on my mini PC. it still freezes when i push the button to finalize

i am using DuckDNS with the same IP adress for internal/external URL. They both work on my 4 other android devices + my computer without any issue
My Device is SM-T815 with android 7.0

my previous config that was on my computer was working with this android device…

Does it ring a bell to one of you ?

Many thanks