Need Help: Can't connect through Estimote App

Hi

For some reason I am unable to connect to my beacons through the Estimote app to change their ranges etc. It was still working fine last week but for some reason I am unable to connect to them.

It tries to connect and after a while it says “Disconnected. Tap to connect”.

I am using an LG V20 (Android).

Please let me know how to fix this, as it is urgent that I am able to change this.

Thanks