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Could you please make sure that the addess on your Google Nest speaker is on the correct address? Here's how:
Note: When you change the home address, it only affects the devices in the home you selected. You can edit or delete this address anytime.
As soon as you're done with that, reboot your Google Nest Hub simply by unplugging it from the power source for at least a few minutes and let's see if this will make any changes. Let us know how it goes.