Dude THE 55th spirit of the Goetia Prince Orobas is a real boss player.
He is a night spirit so make sure you evoke at night. Simple English Demonic Evocation Guide
Use this format exactly to evoke, I’ve gotten him to come to full physical appearance with this method.
Give him an offering of quaker oats, camel turkish gold cigarettes ( light one for him near his seal and declare it for him) and a glass of water.
Now IF you DO this he will come I guarantee it. WHEN he arrives offer him food water and tobacco as gifts befitting a great Prince.
Now you have two choices, you can thank him for his attendance and ask that he answers you again and give him license to depart.
OR
You can make your request or petitions to him.
I’ve read your above post and there is no doubts in mind he would help you.
I look forward to an update from you.
Your a magician right? If you fail once you don’t just quit dude. You try again until you get it right. Only way you’re going to grow past this.
And you’re welcome in advance 
Oh whatever agreement you make with him you better honestly in your heart intend to keep With him. He will gaze into you, through you and know your heart as he knows all things. If you don’t intend to deal fairly with him it may go bad for you. Other Magicians have been literally smote and killed by him for deceit. So honor your word to the great Prince.