iXpand Drive stop working after upgrade to latest version 5.0.5 (iOS)

My iOS is the current version 12 .

It was working well until i upgrade the apps to version 5.0.5

Now the stick is not able to detect in my iPhone 7 Plus and iPad Pro . ( Both iOS 12)

Any idea ?

I am using 5.0.5 iOS 12 and iPhone 7 with no issues so i do not think this is a software or update issue. 

Is the iXpand detected under ioS settings > general > about? if it is not seen there then the phone itself is not detecting it so the app would not see it either. If this is the case it could be a bad drive.