Hope this helps others.
I  have an active Airspace Authorization for a Class D Airport near me.  This AM's drone job was located in this Airspace. I had gotten an  approved Custom Unlocking Request and successfully imported & turned  it on in my DJI RC Pro. I got to the job site and no go! "Restricted Zone" error!
On  my cell phone I was able to find a post on the DJI Forum describing my  exact situation - followed it - and finally managed to carry out my  mission. I agree with this forum post = This is definitely the process  from hell to follow AND DJI self unlocking process is nothing but a  piece of junk! Forum Post: https://forum.dji.com/thread-206254-1-1.html #flysafe

Hello there Marleyman. I am sorry for the trouble this has caused and for giving out these information. For us to be able to assist you with regards to this matter. Kindly please send an email to our DJI FlySafe Department at flysafe@dji.com for us to be able to help you further. Thank you.