ALL:
The repository is being worked on now (an overhaul).
It does function now for downloading the DEB file and installing.
As part of the overhaul, the signing keys will be addressed.
(been problematic for a bit now).
As signing has upgraded in the distros, there will be those who see apt complain about the signing key. This is expected (Sorry).
This will be resolved as the repository (and the backside which populates it) get updated.
I don’t have a completion date for you but can share it is current tasking for the team.
