HA keeps exposing devices to Alexa even though its disabled

I have a subscription to Nabu Casa and since doing so Home Assistant keeps adding entities to Alexa even though I have told it not to. I have literally hundreds of devices in the Alexa app that I don’t want there.

In the Voice Assistant settings in HA I have Expose New Entities disabled for Alexa and am only exposing 4 devices yet HA seems to keep adding new devices all the time.

Am I missing something here?

Thanks Dan