Only some Promethean boards will render some pages as displays

**Describe the bug**
Only some Promethean boards will render some pages as displays. We have 3 random promethean boards and some of them work fine with every display, but some of them will only render some pages. If it something simple to figure out and fix it might be worth it. -- if you want to tell me what data I need to provide on the working and not working boards let me know.

**To Reproduce**
Try to load any scoring timer or timing display and it won't load (but the inspection report page will)

**Expected behavior**
All scoring displays should work on commonly available hardware in schools

**Device (please complete the following information):**
Patrick M has pictures of the versions

**Additional context**
Only fix is if it's low cost to figure out and address, otherwise reject this issue.