I have this problem with my Meta/Facebook Webhook, It does not allow sending data to my CRM, when I test it the webhook returned me this error “The page admin who installs the app has ceased being an admin”.

I have this problem with my Meta/Facebook Webhook, It does not allow sending data to my CRM, when I test it the webhook returned me this error “The page admin who installs the app has ceased being an admin”.

Description
I’ve been working on processing leads through our system and encountered an issue. I’ve enabled webhooks on my app, subscribed to leadgen, and provided my callback redirect URL. However, whenever I create a lead, it should be sent to my server, but when I track the status, it shows “failed” with the message “webhook.delivery.rejected.”
I’ve looked in the logs of my application but the request is not entering my server at all. I’m trying to understand why this is happening and how to ensure my configuration is correct for receiving leads.