Sorry for the delay i am sharing you a test firmware for specific issue in DM kindly find it there and let me know if everything is works fine .
I have also tested it on my side and i was able to configure multiple AP with this firmware.
This is just a test firmware for specific issue don't use it for your whole fleet , just use for a handful device so once we get a positive response from you these changes will be added to the master firmware once its released.
Thank you for your patience .
Have a great day.