Halfhidden Goto Admin > Settings > Customer Application and turn this on:
Auto Full Address on Location Selection Page
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If you have this setting turned off, auto generated address from Google will only give you Major Area, Town, City and country.
But if you enable this, you will get more data.
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If you still need to get the user address during registration, then you will have to do that yourself by customising the customer application. (Extended License required)