You may not have logged onto TamaTown with the correct User Name.
From the TamaTown FAQ at (
https://www.tamatown.com/faq.html ):
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Q: The password I used gave me an ERROR message. How do passwords work?
Tamagotchi Town is filled with passwords. These passwords allow you to obtain and store Gotchi-prizes in your V3 toy. However, passwords are unique to each Tamagotchi character and cannot be shared among virtual pet owners. To make sure you always obtain a working password, enter exactly the same USER NAME (including any spaces or punctuation) at Tamatown.com that you created in your Version 3 toy when you first hatched it.
You can view your Tamagotchi Connection USER NAME in the "Health Meter" menu along with all the other virtual pet stats. Press button (A) to select the "Health Meter" and press button (
six times to locate the USER NAME.
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Your Tamagotchi character has to be on generation 2 or higher to visit its parent, and generation 3 or higher to visit its grandparent.
Go to the TamaTown site and click on the Parents or Grandparent's house. A password prompt will appear.
Quote from TamaTown parent / grandparent house online help:
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Before you can visit your parents / grandparent, you need to get a password from your Tamagotchi toy.
Here's how:
1. On your toy go to the Friend list icon, and press the (
button to select it.
2. Then, use the (
button to select "Family" and press the (
button again to select "History."
3. Select your grandparent, and press the (
button. This should give you a password.
4. Now take the password you get from the Tamagotchi toy, and enter it here!
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