We switched everyone’s servers to use our new license domain license.iwx.io many months ago, so anyone who experiences this issue should check that their server is up to date. If you’re not at least on 7.13.9, you likely have an issue with yum updates completing. This should appear in the “Health” section of the NodeWorx interface as a “Yum Update Failing” error.
The most common reason we’ve seen is the removal of the 10.2 repos by MariaDB last August. More information here: Potential yum issue due to MariaDB 10.2 EOL