Articulate Rise package shows up as blank on Moodle LMS

Hi Colleagues

Any help or pointers in the right direction will be very appreciated.

We are  operating with moodle 4.3.3+ and using articulate rise 360 Scorm packages and running theme Edwiser REMUI version 4.3.2. The Scorm packages which we then deploy open in a new window with 100%/100% window settings.

For the most this works perfectly and have a few hundred running, but from time to time it appears that the package is launching in moodle but then ends with a white screen. This normally happens after we have deployed the Scorm and tested that it works, this is the case where a user had accessed before but also when never accessed before, is not linked to a specific role/permission.

Tested the affected Scorm packages on scormcloud and performed with no problem so the package itself is fine. It also does not appear to be a browser problem given settings to allow pop ups etc.  or a role/permissions problem as is experienced by different user roles. Would be to many Scorm packages to change each and also manually resetting seems to temporarily solve the problem but with big numbers of students not workable.

Any pointers would be welcome