Our Crucible server web interface reports our license as 'Evaluation'
I was pretty sure we paid for it back in june, so I accessed our Atlassian page to check for License Status.
Well... it turns out that on page https://my.atlassian.com/product, Crucible Server license is listed to expire on June 18th 2019.
So I copied the License key into our crucible license.
The result is this:
"The license key you have entered terminated on July 13, 2018. Please enter a current license key."
Now I wonder... what went wrong?