Images not imported at all

(I’m running WP 3.8.1)

Blogger Importer plugin has standard options:

// 14/2/2013 switched from global defines to class constants
// These are used to change the behaviour of the importer from the default.
const MAX_RESULTS = 25; // How many records per GData query (int)
const MAX_EXECUTION_TIME = 20; // How many seconds to let the script run (int)
const STATUS_INTERVAL = 3; // How many seconds between status bar updates (int)
const IMPORT_IMG = true; // Should we import the images (boolean)
const REMOTE_TIMEOUT = 5; // How many seconds to wait until google responds (int)
const LARGE_IMAGE_SIZE = ‘1024’; // The size of large images downloaded (string)
const POST_PINGBACK = 0; // Turn off the post pingback, set to 1 to re-enabled(bool)
//N.B. Not all images will be this large and not all will be able to be remapped.

I’ve tried just now this old plugin: https://www.ads-software.com/plugins/blogger-image-import/

Same problem: it don’t import any image from my old Blogger blog.
Blogger changed something during these days ?

Blogger Image Import
Importing a maximum of 10 images
Posts Processed : 122
Images Imported : 0 (+ thumbnails)
Success!

Another test trying https://www.ads-software.com/plugins/import-external-images
No success

Agosto 2011: primo test: No images imported – you might want to check whether they still exist!
Du is megl che uan ? Oh yes !: No images imported – you might want to check whether they still exist!
Colore: No images imported – you might want to check whether they still exist!
(…omissis…)

But they don’t exist in my media library.
And my media library is writable: I can upload images from my PC withou any problem.

You could turn on the debug logging and see what errors are occuring when it tries to process the images.
I think the fact this fails with 3 different plugins might indicate some kind of permissions or other issue with your server but the log should tell more.

Sorry, I’m a novice in WordPress.
Do you mean enable WP_DEBUG or something else ?

It needs to log to file rather than to the screen so check WP_DEBUG, WP_DEBUG_LOG and WP_DEBUG_DISPLAY

https://codex.www.ads-software.com/Debugging_in_WordPress

I’ve opened a support ticket within AlterVista provider.
The problem was provider firewall: it was blocking some Google IP address.
Now they have correctly opened their firewall and all works fine.

All image are imported correctly.

Thanks