[Q] Unable to open Kindle App

[elfrider]

I'm running my KFHD 7" with Kinology 3.3 - my Amazon account is currently not registered to the device so I only have my Play apps (no Amazon apps) showing in the app drawer. If I register my Amazon account, the Play apps disappear and the Amazon apps appear, then vice versa when I de-register the Amazon account, with no data loss when I do this. With previous versions of Kinology the Amazon and Play apps used to co-exist together with no problem. I'm not actually bothered about the Amazon apps, but for some reason I cannot open the Kindle app from the Play store - it gives me the 'open' button in the Play store and it's showing as an installed app but it's not showing in the app drawer and it won't open. Obviously the 'Books' carousel doesn't work because it's not registered to my Amazon account. I don't want to have to keep registering/de-registering every time I want to read a book on it - any ideas on this one?