Final solution at last!
Have created a new (user) Role with "allow_restricted_indices": true permission and "all" on the restricted indice, like this:
POST /_security/role/_temp_restricted_indice_permission
{
"indices": [
{
"names": [ ".restricted-indice-name" ],
"privileges": [ "all" ],
"allow_restricted_indices": true
}
]
}
Then go to Kibana -> Management -> Users and give this role to your user.
Next go to Kibana -> Management -> Index Management, filter by indices with errors, go to detail to each one of the indices and click "Manage ^" -> "Remove lifecycle policy" like shown bellow:
Solve this issue, no more indices with errors and no restricted indices or system configuration / information was affected! 
Thank you all for your inputs and shared ideas.
Greetings, Pedro
P.S. - maybe just manage_ilm or manage permissions on (user) Role catching the restricted indice will do the job but...