Errors Updating Apps

I can honestly say i have never seen that message before

Mine's set to 18+ and I've never had this issue, maybe try changing it and restart your phone to see if it works.

This probably relates to the age limit set in your device for allowing/limiting limits on the age you have to be to play games with, for example games with adult content (or other reasons identified by developers)? Here is a starting point. :
To change the age rating or parental restrictions on a Samsung phone, update the settings in the Google Play Store, the Samsung Galaxy Store, or your Google/Samsung account birthday information"

Thanks all, I fiddled with this setting & after changing it back and forth a couple of times, the pop up disappeared.

131986Donkeychong$1994ACHPM56H9Z9Y48M$2026Safcolaustralia$18