The last release via GITHUB is 3.16.1+190225. Which is 3.16.0.
The download release is 3.16.0+190225.zip.
Looks like a human mistake by the release build number.
There is currently no update available. Your installed 3.16.0. is the lastest version.
So you can ignore the ComfortUpdate issue at the moment.
When a new version is released, the ComfortUpdate server will be updated too.