Thanks to everyone for responding, especially @gdbir@lemmy.world who realized where my problem was.

Can I just say that the speed and volume with which people responded far exceeded my expectations? I was worried the smaller population here would be a hindrance, but apparently we’re working with quality not quantity 😊

THANK YOU! That worked. 👍🏻

Not for me! I don’t get a prompt.

Tried a couple of sites, it didn’t work. Nothing happened on clicking, other than activation the insertion cursor.

Okay, I tried going to a couple of sites and clicking in the email field, as described in the Apple support article. Nothing happens. Turned off all extensions, still no joy.

Can’t say I’m surprised, it seems like online instructions for almost everything are outdated, flawed, or just plain wrong.