Templates are not compatible with Older version of Buildbox as mentioned in Description, It requires Buildbox 2.3.6 or more. Most of the templates are complete games and been released by other buyers. if you have any more questions you can send me an email. Thank you.
Version 3 is not even a Production Ready yet .. and Another thing is Buildbox 2 and Buildbox 3 are different softwares. so i think they will merge it later in the possible final release but for now they have a separate version 2 of it.
A regular license allows an item to be used in one project for either personal or commercial use by you or on behalf of a client. The item cannot be offered for resale either on its own or as part of a project. Distribution of source files is not permitted.
An extended license allows an item to be used in unlimited projects for either personal or commercial use. The item cannot be offered for resale "as-is". It is allowed to distribute/sublicense the source files as part of a larger project.