A couple of points.
1. The credential you need to use with the "maglev login" command is "admin" by default.
2. Cisco DNA Center Virtual Appliance is not released yet. Therefore, any VM installation using the current ISO image is not recommended and ...
System version 1.3.0.159 corresponds to Cisco DNA Center 1.3.3.8, which does not save the configuration provisioned through a template to the startup-config. Starting with Cisco DNA Center 2.1.x, configurations pushed through templates will be saved ...
Support for layer-2 border handoff automation for C9500-32C/32QC/24Y4C/48Y4C is being planned for a future Cisco DNA Center version. It will also require IOS-XE 16.12+ running on those platforms.
Make sure that when you're discovering the 9300 that the Netconf option (on the default port 830) is enabled. Once discovery with netconf is successful, you'll see the option to enable embedded wireless on the 9300 in the fabric infrastructure page.
