Orbi App bug - reviewing connected devices, the app does not allow scrolling to the very bottom.

I am having a similar and more frustrating problem on my iPhone. When using the app and reviewing devices I turned off an older iPad I then changed my mind and wanted to switch it back on but the device no longer showed up.  I did NOTHING else but then my phone could no longer connect to wi-fi via the routers.  The orbi certicate is no longer trusted even though it's not expired.  All of our other devices connect with no problems except for my older ipad which is totally blocked. 

I called support who wouldn't help unless I paid $90 or more for a support package.

Using App as intended has messed up my phone.