WhatsApp Business Number Verification Failed After Logout

I have been experiencing a serious problem with WhatsApp Business verification since yesterday. The application logged me out of my existing WhatsApp Business account, and since then I have been unable to verify my number again. When I try to set up WhatsApp Business on my number +27644533***, the app does not send any verification prompts, and after a while it informs me that it could not verify my number. To try to solve the problem on my side, I have deleted and reinstalled the app several times, but every attempt ends with the same result and I still cannot regain access to my WhatsApp Business account on this number. I request that my WhatsApp Business number be urgently verified and my access restored, that the verification error be investigated and fixed, and that I be provided with a clear explanation of why this issue occurred and how it will be prevented in the future.