ipad pro 10.5

I have recently bought a set of JBL TUNE 600BTNC noise cancelling headphones and they paired immediately with my 2017 iMac18,3 running under macOS Catalina v10.15.3 (19D76). However, my 10.5" iPad Pro Model MPME2B/A running under iOS 13.3.1 cannot "see" the cans even when they are placed right...

My new iPad Pro 10.5 is here after a month long wait as my friend took sweet time in USA to bring it here. And oh boy!!....It is awesome. Actually he little bit messed up after receiving the box and then tried switching on and passcode was wrongfully entered leading to the disabling of iPad...