Moving from armhf (32bit) to arm64 (Pi 4)

First of all, thank you for your tutorial
after restoring my ncp-config_XXXXXXXX.tar
I have no access to my nextcloudpi (https://192.168.1.***:4443/) page or ssh access

Can you help me to find the solution please

Note: I have followed all the steps in the tutorial

édit___________________________
I have access to the nextcloud page (https://192.168.1.***/index.php/apps/dashboard/#/), with the ncp account