amazon kindle app in secure folder

[sam51]

ever since nougat update on samsung on8 device, amazon kindle app has stopped functioning in samsung secure folder. throws error that it is not optimised. any idea anyone, if this can be resolved.

also what other apps can throw such error, like whatsapp, fb etc.

[admin_]

Thanks for part of Samsung community.We apologize for the inconvenience caused to you. We would like to inform you that there might be some configuration issue kindly follow the path below Settings>>apps>>Apps in which you are facing the issue>>force stop clear date>>restart the device.

[sam51]

thanks for suggesting. unfortunately the steps do not work in this case as throws error even before it gets installed hence not found in settings>apps