Re-instaling Athom mmWave presence sensor

I am tad new with ESPHome. Can anyone help me re install my new Presence Sensor, it showed an error at one point and, trying to fix it, I messed it us… when I try to reinstall I end up with 2 different versions. Over the air update to ESPHome 10…6 puts a error message out that no password is provided…I grabbed a file from https://github.com/athom-tech/athom-configs/blob/600ddf21e308d025fc68e7fd2638d50dcfda417c/athom-presence-sensor.yaml
But am unsure where and how to use it to reconfigure my unit… I installed the newest version of ESPHome, I guess the generic version and then try adding the specifics for my device but end up with a hot mess…
Thank you.