issues with client's app and Storyline

I have a Fortune 100 client  for whom I am creating a series of Storyline courses.  The learners are all on iPads. The client does not want to go through their training department or use their LMS. The also don't want to have to download the Storyline app for the iPad.

Instead they want the learners to be able to get to the courses with one click in their sales management tool where they store everything else the salesforce needs. They also have access to one overworked IT guy who has created an app for them to get the Storyline courses to play the way they want. Unfortunately, it cuts off text at the top and degrades the audio. They used a professional voiceover for this and it sounds fine on my end.

Any ideas on what is going on and how to solve this problem? they have been very happy with the courses I am developing but these weird technical issues come up and I don't know how to solve them. I think they would even be willing to pay for some service if the problem was actually solved and the cost is reasonable.

thanks!