Did they lose the lander ?
That or lost track of it.
Not lost exactly. Just hoping it will get enough sunlight to be operational when it gets closer to the sun.
IIRC, the lander bounced because the harpoons didn’t fire and it fell in to a crevice where the solar panels couldn’t receive sunlight.
They got about 90 minutes of science out of it.
They think the lander bounced twice and ended up on its side in a canyon where it is getting very little light to recharge its batteries.
It was able to send quite a bit of data before the batteries died, and they are hoping that as it gets closer the increased amount of light reaching its solar cells will re-energize the machine and it will start collecting and transmitting data again.
Still, even landing the thing was an amazing feat, and the little data they got is still far more than we knew beforehand.
The lander harpoon spike failed to fire, so the lander bounced 3 times (in very low gravity) and they aren't really sure exactly where it is.
It is too small to be 'resolved' in the images coming back from the Rosetta Stone.