Plateau LMS launches SCORM 1.2 courses in a very small window.

We have published SCORM 1.2 course from Storyline 360 and uploaded on Plateau LMS. When the launch button is clicked on Plateau LMS, our course is opened in a very small browser window. Learners needs to maximize the window to view the course. This is not a good user experience. Can anything be done from Storyline/course side so that the course launches in a full window from Plateau LMS? From Storyline, the settings has been set to 'Scale player to fill browser' in Modern player.