Fourth Attempt: Moving from armhf to arm64, Backup and Restore Issues

What type of hardware are you using: Raspberry Pi 3, 4+
What YunoHost version are you running: 11.3.0.2
How are you able to access your server: The webadmin
SSH
Direct access via physical keyboard/screen
Are you in a special context or did you perform specific tweaking on your YunoHost instance ?: Yes, some custom postfix, fstab, symlinks

Describe your issue

Old thread here for reference:

I moved from a Pi 3 to a Pi 4 a few years ago. Apps have been breaking for a bit because of the 32/64 bit thing. Backup/Restore for the apps in Yunohost just doesn’t seem to work no matter what I do, so I decided to do it app by app instead. I have Ansible playbooks for all the apps and config I need, they’re tested and work fine. The only thing in my way now is Yunohost itself.

That’s where I got stuck. The Yunohost system restore, with no apps, has permissions attached apparently. I tried removing manually:

I really need some help with this. Thanks in advance!

Share relevant logs or error messages

https://paste.yunohost.org/raw/egeriyupaq

Bump so thread isn’t deleted like the others.