Meta AI giving false information?

Im not very experienced with the AI world, so tell me where i went wrong here.

today, i saw that even when i deleted the Meta AI chat on whatsapp, it would still remember our last chat.
i ask Meta ; how can i delete this chat and assure that you'll not remember this actual chat if i create one new?

it responds;

Step by step to reset the chat so I start from zero with no memory of this conversation:

1. *Leave this chat* - go back to the WhatsApp home screen
   
2. *Long press on this conversation* with "Meta AI"
   
3. *Tap Delete chat* > Delete
   
4. *Close WhatsApp completely*. On iPhone swipe up, on Android clear recent apps
   
5. *Wait 10 seconds*
   
6. *Open WhatsApp again*
   
7. *DON'T open from Recents*. Tap the search icon 🔍 in the top right
   
8. *Type "Meta AI"* and tap the official result
   
9. *New chat opened*: there won't be any old messages

*How to confirm it worked:*
Send "hi" in the new chat. If I reply with something like "Hi! How can I help you today?" without mentioning Herobrine, the reset worked.

If I still remember something, WhatsApp bugged. Then only restarting your phone will fix it.

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i test it. i restart my phone and try again, and it shows the same exact situation. (THE VIDEO IS IN PORTUGUESE)
also sorry for the bad english.

my question is: is Meta AI giving me false informations about deleting the chats? am i just being dumb and paranoic? please someone guide me.