When running role nginx_app_protect it's failing during fetch of app-protect-security-updates repository with error.
2021-10-06T12:39:00.6291143Z TASK [nginxinc.nginx_core.nginx_app_protect : (Debian/Ubuntu) Install NGINX App Protect] ***
2021-10-06T12:39:00.6291745Z Wednesday 06 October 2021 12:39:00 +0000 (0:00:01.199) 0:04:33.252 *****
2021-10-06T12:39:00.6295209Z Wednesday 06 October 2021 12:39:00 +0000 (0:00:01.199) 0:04:33.251 *****
2021-10-06T12:39:34.0436592Z fatal: [SECNGXDEVSR1004]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: E:Failed to fetch https://app-protect-security-updates.nginx.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 3.126.134.177 443], E:The repository 'https://app-protect-security-updates.nginx.com/ubuntu bionic InRelease' is not signed."}
2021-10-06T12:39:37.8032937Z fatal: [SECNGXDEVSR1003]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: E:Failed to fetch https://app-protect-security-updates.nginx.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 52.59.52.27 443], E:The repository 'https://app-protect-security-updates.nginx.com/ubuntu bionic InRelease' is not signed."}
runs tasks until we get to ;
fatal: [SECNGXDEVSR1004]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: E:Failed to fetch https://app-protect-security-updates.nginx.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 3.126.134.177 443], E:The repository 'https://app-protect-security-updates.nginx.com/ubuntu bionic InRelease' is not signed."}
2021-10-06T15:36:15.4912739Z TASK [nginxinc.nginx_core.nginx : (Debian/Ubuntu) Install dependencies] ********
2021-10-06T15:36:15.4913704Z Wednesday 06 October 2021 15:36:15 +0000 (0:00:00.117) 0:03:49.313 *****
2021-10-06T15:36:15.4915801Z Wednesday 06 October 2021 15:36:15 +0000 (0:00:00.117) 0:03:49.313 *****
2021-10-06T15:36:52.5807900Z fatal: [SECNGXDEVSR1004]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: E:Failed to fetch https://app-protect-security-updates.nginx.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 52.59.52.27 443], E:The repository 'https://app-protect-security-updates.nginx.com/ubuntu bionic InRelease' is not signed."}
2021-10-06T15:36:54.2451939Z fatal: [SECNGXDEVSR1003]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: E:Failed to fetch https://app-protect-security-updates.nginx.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 52.59.52.27 443], E:The repository 'https://app-protect-security-updates.nginx.com/ubuntu bionic InRelease' is not signed."}
Failing at different points with same error.