Looking for consistency and clarity in Adobe decision making.

I am still trying to learn and understand Adobe rules, but it is difficult when they seem inconsistent, arbitrary and only provide the incomprehensive phrase "Technical Issues." It is their company, and so it is their rules, and I am willing to abide; however, it would be helpful if there were an appearance of consistency and fairness.

Two examples:

• A series of photos of a restored antique square grand piano built in 1867 by Chickering $ Sons.
  • In the photos with the manufacturer's name clearly visible, Adobe accepted some yet rejected others for "Intellectual Property Refusal." All were accepted immediately by another stock company.
  • I cloned out the manufacturer's name, including the photos Adobe accepted with the name clearly visible, yet all of those were rejected by Adobe for"Technical Issues."
  • Chickering & Sons made pianos from 1823 to 1983.  The company is now defunct.  How would one get permission?  And why?
• A series of photos of some teens in front of a large concrete graffiti wall. 
  • Adobe accepted all except for one, which was because of Intellectual Property Refusal.
  • On the other hand, they did accept two photos with a larger square area of graffiti, including some clear choice words, than the one they rejected.
  • How would one get permission to shoot years' worth of graffiti under an old concrete railroad trestle about a half-mile from any road?  And which spray paint artists?  All?  Majority?  Most recent?
  • All graffiti photos were accepted immediately by another photo stock company.

I do not want to be difficult; I am just trying to understand.