Ubuntu apt-get update fails

Hello
Trying to install insync on ubuntu 16.04 but get these error messages:
W: The repository ‘http://apt.insynchq.com/ubuntu 16.04 Release’ does not have a Release file.
N: Data from such a repository can’t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://apt.insynchq.com/ubuntu/dists/16.04/non-free/binary-amd64/Packages 403 Forbidden
E: Some index files failed to download. They have been ignored, or old ones used instead

Cannot see what is wrong with this. Here is the string in insync.list
“deb http://apt.insynchq.com/ubuntu 16.04 non-free contrib”

We’re aware of the issue and we are currently working on it. We will let you know if we have a solution for it asap.

I have been able to install it with the downloadable file but that is not geeky enough for me:)

It have been an issue for many months…

@Trond_Bakke_Flogstad: For Ubuntu 16.04 the correct entry is deb http://apt.insynchq.com/ubuntu xenial non-free contrib. The codename (which can be retrieved with lsb_release -c is used instead of 16.04.

Thanks. But the download instruction should be updated