Thanks for looking. I May[apologies!] have typed my initial comments in frustration. For clarity, I play most of these have on a phone screen.
I'm going to say screensize is the issue here: If you know what the text says, you can read it on your android phone. I with draw my initial 'shot to shit' and amend it to "you can't read the (lack of clear) instructions unless your running it on a 12"plus monitor." Having ran the game on a much larger screen, I can see where I failed to "turn on" the relevant corruption after I'd unlocked it: But it's difficult /impossible to see some of the options to select on a phone screen.