I've successfully created a managed package:

 Name Value 
 ───────────────────────────── ───────────────────────────────────────────────────────────────────────────────── 
 ID xx 
 Status Success 
 Package Id xx 
 Package Version Id xx 
 Subscriber Package Version Id xx 
 Tag 
 Branch 
 Created Date 2024-08-23 10:47 
 Installation URL https://login.salesforce.com/packaging/installPackage.apexp?p0=04t... 
 Created By 005...
 
However, when installing (via the URL, after 30'), the installation link shows the "package not found" page.

EDIT #1

Note that when:

 sf package list --target-dev-hub bernardo@...

I get:

 Namespace Prefix Name Id Alias Description Type 
 ──────────────── ──────── ────────────────── ──────── ─────────── ─────── 
 R2C2_002 R2C2_002 0Hoxxxxxxxxxxxxxx R2C2_002 Managed 

Which means the package is alright.
I don't know how to continue reviewing the status of the package or the reason it's unavailable. I think there should be a way to check the status or view a log or something.

Any thoughts?