Ah ... we have a failure of communications it seems ... we aren't "seeing" gravity waves ... in the sense we're not using the electromagnetic spectrum ... light ... to investigate the universe ... we're using gravity instead ...
Our theory has the entire early universe opaque to EM radiation ... meaning absolutely NO photons from this time survive today ... they are all gone and so useless to our study ... it wasn't until the plasma state cooled enough to form discrete atoms before the universe became transparent ... the so-called CMB radiation epoch ... all the photons we see today are from after this event ...
The hope is that we can investigate the time before this epoch with gravity waves, as they would not be effected by the universe being opaque to EM ...
My understanding is we have not yet reached this epoch ... we have not yet "seen" the wall, past which photons cannot travel ... it'll be big news when I do I believe ... if we never find it, it's because the universe isn't expanding and all our theories are wrong ... no surprise there ...