0. I chose a bad example for the screenshot but I tried most dice and different numbers.
1: v5_1_3
2. I thought they had, but it seems not. Just D6 as the numbers.
3. Just D6 as before.
4. Word 2019, Win10, all updated.
5. Not at present, and TBH I think I'm going to consider this a sad write-off for now. I have spent quite a lot of spoons so far, which I don't regret, but I have limits. Hopefully having the conversation here will help others later.