I was successful in opening a hell gate. Now I just need to get some demons attention to have them cross over from hell. And I've been doing Latin summoning spells for that purpose. If it doesn't work I'll just make my own spell to do it.
Its funny you mentioning that because I have recently opend the gate also however I was successful in actually going in and returning , also the demon astaroth as blessed me with a secrad stone with a small portion of his power.