Hi @Hugo_Melo
I think we have two bugs: OAI record datestamp · Issue #3051 · pkp/pkp-lib · GitHub and consider URL encoding for oai identifiers · Issue #3052 · pkp/pkp-lib · GitHub.
If you apply these changes those major failures should not occur any more:
– pkp/pkp-lib#3051 fix oai record datestamp by bozana · Pull Request #1685 · pkp/ojs · GitHub
– pkp/pkp-lib#3052 consider url encoding for oai record identifiers by bozana · Pull Request #1687 · pkp/ojs · GitHub
Maybe you can wait just a little bit longer, till Alec have seen those changes and they are finally merged…
Best,
Bozana