Help. My sensor always showing near zero on Real-Time Map

My sensor “Awbrey Glen” has for a while been claiming that channel B is downgraded. The map is showing readings near zero, which match the readings from channel A. However, it is channel B’s measurements which match other sensors in my area. So I suspect that channel A is actually the “downgraded” channel. Is there some way to get the map to report measurements from channel B instead of channel A so that my sensor doesn’t show up as an outlier in my area always reporting near zero?

Just yesterday I used an air compressor to blow out my sensors in an attempt to correct the downgrade. That didn’t help.

I’m considering either replacing the sensors or purchasing a replacement unit.