EyeBall Glue's latest release is updated to work on  PHP 5.x and 7.x - WP 3.9 thru the latest WP 4.9.4 release which is the latest as of this date April 02-2018

EyeBall Glue is developed according to WP best practices and as such when they release a new version we work swiftly to update our systems, if you have any compatibility issues it is wise to email us at support@eyeballglue.com

Wordpress changes rapidly, this post may not be updated as fast so please contact support if you have any issues.