I have a Xerox B210 with AirPrint that I received and setup last night.
I turned on AirPrint and it worked for awhile. I was able to print from my iPhone XS, however a short while later my iPhone was unable to find the B210.
I went into the B210 settings and played around for awhile and eventually the AirPrint worked again. Then this morning I found that my iPhone XS was, again, unable to find the B210 to print to.
I have already installed the latest firmware and drivers.