unable to join rtx beta

I have a 2070 rtx graphics card, 8 gigabytes of ram (technically 7,96 i'm not sure if this is causing the issue) and an i5 cpu. however when I try to go into insider hub and manage the beta it simply does not show up and I am at this time currently unable to join the rtx beta. this inconveniences me as I was really excited to try it out, any help ?