Hi Jan,
The "Note" you've quoted does not apply to the Eval license key. If you're Eval has run out, you'll need to apply an Eval extension key to SRM Profiler side post integration.
If you want to add devices to SRM Profiler, you simply need to open up the SRM Profiler Web Console directly. Usually http://<yourSRMProfilerIPADDRESS>:9000