HELP

Hello,

I have completely removed the number from the WhatsApp Manager account in Meta Business Suite and also from Manychat.  
Even so, when I try to register the number in the WhatsApp Business app, this message appears:
"WhatsApp is currently unavailable. Please try again in 1 hour."

Can you help? I haven't been able to access WhatsApp for a month and I'm losing business,
Thanks