Animal Crossing Pocket Camp memory status on a new smartphone?

Ka
- in Nintendo
1

My son got a new smartphone and now wants to have the game with his memory on the new smartphone. The old account is linked to a Nintendo Account, but as soon as I want to link the game to the account on the new smartphone, a file with 0 MB is loaded after restarting the game. Then the game starts with tutorial. We tried several times, but without success. Any advice?

old smartphone Samsung A50

new smartphone Samsung A51

sp

Is the new smartphone ultimately linked to the Nintendo Account, i.e. Are you logged in?

Has the Nintendo Account on the old smartphone been de-registered in the meantime?

Further information is available here:
https://geekguide.de/animal-crossing-pocket-camp-spielstand-auf-neues-handy-uebertragen/

and here:
https://ac-pocketcamp.com/de-DE/topics/ANNOUNCEMENT_1111252