I'm pretty sure this message is referring to the enhanced privacy options added in 15190 which are available via a server-side switch (I'm not sure what the conditions are, but I think I remember seeing something about California or something like that). This will show up as kobo_privacyCentre_url in the config file. Theoretically, there are individual options for crash logging, analytics, stats, and recommendations.
Update: I found my post:
https://www.mobileread.com/forums/sh....php?p=4003749.
Pam, did you sign in to Kobo in your browser before going to the page?