CK 12 Interactives not working on kolibri online

Good evening from Kenya.
My online kolibri runs very well apart from CK12 Interactives that have used to play on clients devices.
They However run very well from the host PC.
What could be the problem

Hello @Masomotele!

We are happy that your online Kolibri is running well, and sorry that you are experiencing issues with the CK12 interactives. Could you follow these previously outlined steps to send us the screenshot of potential errors?

When I open a CK 12 Interactive it comes up blank on my phone