A quick, much belated, update.
In a fit of reckless curiosity I installed the latest Mixing Station app on an old 30pin iPad 3 which has been serving as a set list holder and interval music repository on the dl1608 since the MF app left the iPad 3 behind, since which time I’ve been using a later iPad.
The latest MS runs great on the iPad 3, docked or wireless. There may be some features that don’t match directly but I haven’t found them yet - and I have been looking.
Also runs on Android phones/tablets so any combo possible, as far as I can see. I’ve run it on a super-cheap Acer tablet with no issues.
Happy resurrections to you all.