Akeeba Subscriptions 7 and beyond are meant as purely internal projects for Akeeba Ltd's site. They are custom tailored to our own, specific use case and site. They are unsuitable for anyone else. As a result Akeeba Subscriptions 6.2.2 is the last ever public release that you can possibly install on your site. It will not be maintained further and we will not provide support for it.
We urge you to migrate to a different subscriptions extension as soon as possible.
This is the end of the line, folks. We warned you this day would come about this 6 years ago, in November 2013.
We are developing, testing and using Akeeba Subscriptions using the latest version of Joomla! and a popular and actively maintained branch of PHP 7. At the time of this writing this is:
Akeeba Subscriptions should be compatible with: