Experienced on a family page. Go to Members under Your Family. Checkbox one non-Ultimate user to Ultimate, click Save. You will be sent to a billing confirmation page.
Hover over "Abort" with the back arrow in the top-left. Note it links to https://kagi.com/account_members — and clicking this reveals the page does not exist.
Expected result: Go back to https://kagi.com/settings?p=account_members
