Hi @AMAURY_PEREZ_MARTINE, I reviewed the XML that was sent to Crossref and it seems to be putting the “alt-name” and “ORCID” in the incorrect order in the XML, which doesn’t align with the behaviour in the plugin for OPS 3.4.0.8. I also noticed that the schema version at the top of the XML is not correct.
One last file I can think to check is plugins/generic/crossref/version.xml
in your OPS installation - what is the content of this file?
I think you need to do a full and careful review of the files in your installation at plugins/generic/crossref
to ensure they match everything in the official release package for 3.4.0.8 - I think something has gone wrong in the installation for this plugin’s files.