Good to Hear you are having fun- it's a system with allot of details- it should serve a purpose and of course, be kinda fun for us weather folks
I will try and answer all of your questions- let me know if I miss the point, been a long morning already
1) It does not auto refresh, as this data is accessed from our server. You can imagine the "stampede" effect on the servers if somehow all of the pages refresh times synced up! There are several plugins available for browsers that will give you an auto refresh option though.
2)You may be picking up another 5n1 sensor in the area? Officially these 5n1 sensors have a 330ft range, but depending on the geographic location and other variables they can go further- so it's possible you may be intermittently picking up another 5N1. The other explanation could be if you changed the ABC switch during operation on the 5N1 sensor, that could create a new ID during broadcast that would make the bridge think there are 2 5N1 sensors, and that one of them (the original ABC selection) is now "out of range". As long as you delete it from your sources list on the website and hide it from view on the app you should be OK either way.
3)Make sure you have the latest firmware, log into the bridge on you network and make sure it is firmware version 112. If it is older firmware it may have translation issues with ºC. The bridge will periodically check for new firmware, but sometimes it will get interrupted or something. So If you have an older version of firmware, try doing a power reset on the bridge (push AND HOLD the register button for at least 15 seconds, then let go and it will reset and reboot) and it will look for firmware after bootup. One status light will be steady and the other one flickering very rapidly if it is doing a firmware download, it will also say "downloading firmware" when you try to log into the bridge. This may take up to a half hour or so to be safe- so try not to interrupt it.
Thanks!