You have a single-user subscription, but you get ADLM error 20 in the licensing diagnostics:
ADLM 20 is a network licensing error.
Run this command to set the license type to Single User instead of Network:
If you still have problems, get a list of the registered options and send that to support:
You click Install to install single-user licensing, but the Arnold License Manager still says that Single-user licensing is not installed.
Uninstall all licensing components and try again.