The following email was received from the Amazon Web Services, Inc:
CONFIG_TEXT: We are writing to inform you that, as of June 9th 2018, Plesk will no longer offer Plesk Onyx on CentOS 7 (WebHost), versions 18.104.22.168, 22.214.171.124, 17.5.3, 126.96.36.199, or 17.0.17 to new subscribers on AWS Marketplace. If you are subscribed to these versions as a current subscriber, your use and subscription is unaffected and you can continue to create new instances, and any running instances will not be affected in any way. However, Plesk will only provide applicable support through September 5th 2018. You can continue to use these product versions after this date, but it will no longer be supported by Plesk.
The notification is a standard message about old images that were removed from AWS Marketplace (17.0.x, 17.5.x, 188.8.131.52), which is incorrect.
Plesk regularly updates its AWS AMIs to the latest version and new customers will only be able to order the latest version of Plesk after such updates.
Plesk continues to provide support for existing installations until the end of life date listed here.
Plesk already asked Amazon to correct this notification on June, 12. Thus, the incorrect notification should not be received any more, if so - contact Plesk Technical Support.