what if bought marketplace content isnt developed any further and the author refuses to call back

General Feedback & Requests
22
  1. When you a buy marketplace good (bp or plugin), make sure have source code if it is a code plugin.
  2. Bp is okay, it is highlevel enough that you should be able to tweak in case anything break when you upgrade version.
  3. Marketplace creator is understandably silent (you may not agree, which is also understandable lol) especially if the sale is low.

So now the big no-no which is a very high risk is if the plugin doesn’t come with source code. Some libraries can integrate with many game engines such as Unity or custom Engine but their integration source code with UE4 must be released to buyers. In this case, normally they also have their own engine-agostic DLL/LIB which normally doesn’t come with source code as they are proprietary.