How to delete Notifications? I now have success having Notifications sent to me, but they are piling up, can't find a Delete/Clear button.

Hello,

If you are referring to Dashboard notifications , you would be better suited going through Wix Customer Care about this issue as it is not a code issue.
https://support.wix.com/en/article/contacting-wix-customer-care-for-support

If you are referring to something else, please elaborate on the issue and explain the exact actions you are trying to perform (attach a screenshot if possible).