I have a problem

The isilo icon is on the initial screen and opens the application, but disappeared from the list of applications in the settings.

The problem is that when I want to fetch a file pdb, for example in Box.com, Isilo does not appear in the apps options to open that file.

I already uninstalled Isilo, I reinstalled, reset Ipad and it does not work.

Last week everything worked fine.

My IOs is up to date.

Any help for this situation?