Hello,
we do not keep track of the sites where Akeeba Backup is installed, what you're looking for is the Additional Download ID feature inside our site.
Instead of using your main download ID for every customer, you can create an additional Download ID just for that customer. Then if something goes wrong, you can simply remove such Download ID from our site.
Please note that this will only block the user from updating Akeeba Backup, our software will continue to work, even if obsolete.
Davide Tampellini
Developer and Support Staff
🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!