Hello,
Here comes the thing i think that happens. I installed AriOS and then some updates. After installing the updates i got a message saying that there are some configuration things that can be replaced by the update. I clicked at "more details" and i saw "gnome-shell" among other things. So i decided not to replace this.
Ok, thats the only thing I did different form the first installation and i have rebooted sometimes and I still have that Cool AriOS look.
I don't know if now its completely solved, but i'm very happy
if it changes again i'll try your suggestion IciLeMeme
Thank you Roman and IciLeMeme
Thank you for the help and the fasts reply