In order to be able to access the H5P reports it is necessary a WS.

This WS should return the necessary data to display the attempts report in the official moodle app.

In this case, the data from the report export_to_template should work.

Check mod_scorm_get_scorm_access_information for reference. And MDL-68449 for the other mobile WS on mod_h5pactivity.