HP Wireless Printer no longer sees iPhone Personal Hotspot
I've just moved out of my house, where I had a solid WiFi hotspot. We have moved into a motorhome, ready to see the country. My iPhone plan includes a Personal Hotspot, and I'm using it now with my MBP. But my HP Wireless Printer (Color LaserJet Pro M252dw), which has printed several dozen pages when connected to the MBP (and a Dell windows machine) via the Personal Hotspot, has suddenly stopped recognizing the Hotspot. I've even taken the phone and laid it straight onto the printer, with the page in iPhone Preferences about Personal Hotspot. Type in the SSID, and the printer still tells me that it can't find that Hotspot.
When I searched Google, it gave me an Apple Community Forums page that looked like it was talking about trying to print from the iPhone. Please note that I'm not trying to do that. I'm trying to print from the printer on a connection that has worked before, but has suddenly stopped working.
Help!
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Mac user since 1997
MacBook Pro (M1, 2020)