Xamarin.Android Estimote SDK - Nearables are not being found

Hi, can you please help me, as I bought estimote nearables(stickers) but I can’t seem to discover any of them with the code in the “Quick start for nearable discovery” section of this link: https://components.xamarin.com/gettingstarted/estimotesdkandroid

I have added the relevent Bluetooth and location privileges to the android project, and my device(Samsung Galaxy Note5) is running android marshmallow.

When I use the official Estimote App from the playstore on the same mobile device, the nearables are found with ease.

If you could please just give me an indication of what I might be doing wrong?

Thank you in advance