I think the question https://superuser.com/q/1750696/964771 should not be closed. After some investigation I found the solution (cause of the problem). However with the question being closed I cannot add the answer. What to do?
The deletion was automatic - and I've undeleted it. I have however not reopened it - the comments reflect issues with the question that need to be addressed, and if the changes fix these issues, the question could be reopened via the usual routes. Do ensure you have the question in good working order before you tick on the box that pushes it back into the queue.