The access situation is currently unclear. Apparently there have been problems with the landowners who were pissed because of climbers leaving trash and the gates open. Possibly this is better now. The road has a "no entry" road sign. Some of the trails are overgrown.
https://www.lacrux.com/wp-content/uploads/2018/08/Topo-Bouldern-Sardinien_Guidebook.pdf