Great plugin almost no support Paid plugins won’t activate

Paid Plugins will not activate. Causes site to give php error locking up the site until the plugin is removed using filoezilla. Emailed support several times and put in trouble ticket but all I got back was one email stating he “would look into it” and haven’t heard back since. This is a great plugin and we really wanted it to work and would have given them a 5 star rating if only they would do what they say and support the plugin