iTMSTransporter upload with success but new screenshots never show up

I'm fighting with iTMSTransporter to upload all of our screenshots to AppStoreConnect.

Here is the XML I provide:

Code Block 
	<?xml version="1.0" encoding="UTF-8"?>
	<package xmlns="http://apple.com/itunes/importer" version="software5.11">
	  <!-- This document was generated on Nov 3, 2020, 11:46:11 PM for ***. -->
	  <!-- NOTE: metadata_token is generated on lookup.  Modifying the value of this will result in an import error -->
	  <metadata_token>***</metadata_token>
	  <team_id>***</team_id>
	  <software>
	    <!--Apple ID: ***-->
	    <vendor_id>***</vendor_id>
	    <software_metadata app_platform="ios">
	      <versions>
	        <version string="2.5">
	          <locales>
	            <locale name="de-DE">
	              <title>***</title>
	              <software_screenshots>
	                <software_screenshot display_target="iOS-5.5-in" position="1">
	                  <size>779842</size>
	                  <file_name>10-Map_1_515B1FE6-FB23-4598-8AE2-0E646CCE60F3.png</file_name>
	                  <checksum type="md5">0cbd5e2fe790d62efce29682783abc62</checksum>
	                </software_screenshot>
                    ...
	              </software_screenshots>
	            </locale>
	            <locale name="es-ES">
	              <title>***</title>
	              <software_screenshots>
	                <software_screenshot display_target="iOS-5.5-in" position="1">
	                  <size>643614</size>
	                  <file_name>10-Map_1_6ED6F23E-53CE-4E4C-9C7E-AE7E4512746C.png</file_name>
	                  <checksum type="md5">ea1c9408b5fa3c9379c5e11190f1ac2c</checksum>
	                </software_screenshot>
                    ...
	              </software_screenshots>
	            </locale>
	            <locale name="fr-FR">
	              <title>***</title>
	              <software_screenshots>
	                <software_screenshot display_target="iOS-5.5-in" position="1">
	                  <size>605170</size>
	                  <file_name>10-Map_1_31239DCF-DCA4-4442-A7A8-6BEE3A33B5B4.png</file_name>
	                  <checksum type="md5">0631c09201a56516aaad23614c1fe256</checksum>
	                </software_screenshot>
                    ...
	              </software_screenshots>
	            </locale>
	          </locales>
	        </version>
	      </versions>
	    </software_metadata>
	  </software>
	</package>

Here's what I do: I download the metadata with xcrun iTMSTransporter -m lookupMetadata mode, I clean up all the useless fields, and I update all the screenshots information (size, md5, name) for the new files I provide.

I check if everything is fine with the xcrun iTMSTransporter -m verify mode and it says:

Code Block 
    Package Summary:
 
    1 packages were verified successfully:
	    /Users/.../***.itmsp

Then I upload the lot with xcrun iTMSTransporter -m upload, and once again it's a success:

Code Block 
    Package Summary:
 
    1 packages were uloaded successfully:
	    /Users/.../***.itmsp

But in the end... None of my new screenshots show up in AppStoreConnect... Even after 24 hours...

I have also tried to leave all the original xml fields intact, updating only the software_screenshots, but it leads to the same result...

Nothing in the log seems to give a clue about something going wrong, the size uploaded is the size of the package, no warning whatsoever, I'm a bit confused...

So if someone has a clue on what is going on here...
Thanks in advance.