The app OBiON Android lastest version is released on October 28, 2011 which is more than 6 years ago. Please update the app to make it run on latest android version (i.e. Android 8.0 and 7.0). We paid for the Obihai machines but this app is seriously outdated and can not be used to contact my Obi200
https://play.google.com/store/apps/details?id=com.paad.hello&hl=en
Your request is unlikely to be met. The link to download the PC version was removed from the Obihai web site quite some time ago and I believe the i-things version is no longer in the app store.
There are workarounds to use SIP based apps instead.