Dear Meta Support Team,

I am experiencing an issue with adding a phone number to my WhatsApp Business Manager account. Despite completing all the necessary verification steps—including verifying the number via SMS code and getting the display name approved—the phone number status remains "Pending" in WhatsApp Manager.

The message displayed is:

Pending Once the display name is approved, download the certificate to connect this phone number.

When I attempt to follow the instructions provided, I encounter issues with the registration process using the On-Premises API. Specifically, I am uncertain about the correct URL to use for the /v1/account endpoint.

The documentation mentions that the On-Premises API is being deprecated and that the /v1/account endpoint can no longer be used to register business phone numbers, returning the error:

{ "code": 1005, "title": "Access denied", "details": "Unknown error: biz_link_on_prem_reg_blocked" } I understand that the On-Premises API is being sunset, but I would like assistance in either:

• Understanding how to correctly register my phone number using the On-Premises API, or
• Guidance on how to proceed with the registration using the Cloud API if the On-Premises API is no longer supported.

I would appreciate detailed instructions on how to resolve this issue, as the pending status is preventing me from connecting my phone number and utilizing the WhatsApp Business API effectively.

Phone number ID: 509612215559534 WhatsApp account ID: 488332487692681

Best regards, Artur