I’ve just installed insync 18.104.22.168069-artful on a fresh Xubuntu 18.04 install. insync works OK, I’ve seen no problems, but the repository is not signed, so
sudo apt update outputs these errors:
E: Failed to fetch http://apt.insynchq.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 22.214.171.124 80]
E: The repository 'http://apt.insynchq.com/ubuntu bionic InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
Here’s the repository source that insync creates:
:paulo@monk:~/Downloads$ cat /etc/apt/sources.list.d/insync.list
deb http://apt.insynchq.com/ubuntu bionic non-free contrib