Hi @Ana,
I’ve seen this error before, see:
Firewall issue:
Admin user missing a role:
There are a couple of posts here that might be helpful:
https://forum.pkp.sfu.ca/search?q=You%20are%20not%20authorized%20to%20access%20the%20requested%20resource
Let me know if nothing works for you.
Best,
Jonas Raoni