Need some clarification here. We have integrated GroupDoc in PHP project and the license is for .NET platform. Considering the current status, we are still able to use GroupDoc in Annotation mode. There is another mode previously used in the project, i.e., Viewer mode, however, it is not functional. FYI: the documentation link earlier sent by you in a separate email doesn’t have documentation for integration with PHP projects. It seems they support only .NET and JAVA platforms.
Thanks for your inquiry. Please find the answer of your query in your original post.