"Client Certificate Requested" Error, When Opening Field Maps and Collector

[KellyArmstrong]

Yesterday, I started to get this error on my Android phone.  I have the latest Field Maps and Collector app and my Android is fully updated.  Not sure why I got this error today, after never receiving it...  I have attached the screenshot from my phone.

[MuhammadWaqar_ul_islam]

Application is working fine with IOS, only issue observed in android version 

[padmalcom]

We have the same issue on android. Downloading the certificate from a browser and exporting/importing to android failed, since newer android versions ask for a private key which we do not have. How do we deal with this issue?