Ok. This should not block your release. The play store "user interface" is sometimes a bit misleading. Are you absolutely sure that you didn't oversee a "continue" or "publish" (or similar) button?
I uploaded my last update apk maybe 3 or 4 weeks ago. I was also displayed this info but I could continue publishing the update.
If you still find no way. Then you might show a (complete) screenshot of the webpage. (If there is sensitive information feel free to blur it though)
Edit:
I am speaking of the web page which is (still) displayed after to click on "Close" acknowledging the warning.
Edit:
Check if there's anything else that stops play.google.com from publishing the app. (Missing mandatory fields in the store listing, maybe Privacy Policy or content rating...) Normally, the UI should give you a hint when something isn't completed.