BK8000L password

Hi,
I have been working on bk8000L modules for long time and have designed different audio transmitters using it. But this time when I ordered 5 modules from China, the seller sent me a little bit changed modules. Both (the older and the newer) look same. but when I turned the newly received modules. Its name was “OHaNAS” and was asking for the passkey while paring it with phone or pc. ?
I asked the seller for the password, but no reply. If anyone knows its password/passkey , please share with me.

I have also tried the common bluetooth passwords i.e. 0000, 1234, 5555, 8888, 888888, 1111, 9999 but no one works.
I am sharing the picture for this module.

1.png

@MominNadeem, do not cross-post. Other thread removed.