Has anybody else encountered this? I used to be able to broadcast to my son’s bedroom speaker via the usual Assistant command of ‘broadcast to…’, but that was before he had his own google profile (which is managed by me through Google Family Link).

Ever since then, when I try to broadcast, I now get this (with his full name instead of just the speaker name, which is only his first name). And googling by the exact wording of the message, and things like “add broadcast number to a Google account”, has so far given me nothing.

Obviously I can just rename the speaker, but I’m keen to know what’s causing this and whether this so-called broadcast number can be added to his account.