Rise SCORM not displaying in Moodle on iOS

We are seriously struggling with a similar issue. We have created many many SCORM items and uploaded into Moodle LMS. Some students are using their smartphones to complete the courses. We did realise it was probably related to Safari. So we got students to download Google Chrome app. Here is what happens: TEST 3: Accessed ACTIVITY | WHS Regulators and Regulations. After clicking the item and Enter, clicked Start. Bottom next topic/lesson link not showing unless scroll down and hold – and even then, not clickable. The only way forward is to scroll up and use the menu. (This one doesn’t have, but a previous one had a quiz – unable to access it.) Got to the last screen from the menu. Can’t see the COMPLETE. So scrolled up and clicked EXIT on top right of the screen. Got the Bye screen. The main issue is that it is absolutely essential that Moodle captures the completion (government requirement), and currently it's intermittent at best. Please help. We have hundreds of assets, some recent ones.