Hi Katherine,
It looks like you should be good to go, so I’m not sure exactly what the problem might be but have some ideas we could try.
For performance reasons, we don’t continually check to see if you have a valid Event Aggregator license. Instead, this test is performed periodically and the result is cached.
If this is behind the problem, you could simply wait a few hours and try again (I realize this isn’t ideal and shouldn’t be necessary – normally it isn’t – but it could be a simple way to tackle this).
Should that not work or if you want to try something sooner, please install a plugin such as Transients Manager: wipe/clear all transients and see if the problem is resolved.
Let me know if either of these steps help!