Hey @AndresEcheverri
If possible, would you be able to Reindex your portal? I know it may seem trivial, but it helped some view issues I had after upgrading https://your-org/portal/portaladmin/system/indexer
After that, are you using a Reverse Proxy at all? If so I'd check linkages and certificate validation.
Finally, I'd attempt to check out the hosted information on the server itself, see if it's visible, or accessible in any way and see if you can manipulate from there possibly.
Let me know how it goes and I can find some other methods I'm sure!
Cody