Orbi SpeedTest not working on iOS app.

You're not alone Fritzsche0529. I'm (Mike) having the same problem with the Orbi iOS app.  I installed the RBK753S, and the app, on 8/28/20.  The SpeedTest worked fine on the app until about 9/10/20.  I have rebooted the router and modem (several times) and have gone through a complete new installation setup.  SpeedTest still doesn't work and says 'Connection Failed'.  I've also tried to run the SpeedTest on the Configuration Website and it doesn't work now either; it did before.  RBR750 Firmware is V3.2.16.6_1.4.4.  IOS app Firmware is V3.2.16.6.  Additionally, the app keeps oscillating showing internet Online and then Offline. When it says Offline, the RBR750 has a pink dot on the app Network map, but there is no lighted band showing on the actual RBR750.  I am using an iPhone XR and a late 2015 iMac running Catalina. Any suggestions from NetGear, or others, to fix this?