Unable to activate Whatsapp Messenger

Once I have connected the whatsapp messenger via Facebook business, nothing loads on the screen and it is back to the inital Setup Whatsapp Messenger screen. Please help.

@Harsha_Jakku have you configured the journey for WA flow?

It has already been prepared. My old number stopped working. So tried to redo with the new number.
Wasn’t able to do it.

@Harsha_Jakku xo is there an issue with integrating a new number for WA.Please check for the error you are getting while integrating the new number.