Hello, I am facing a persistent network block on TCP port 80 in the sa-saopaulo-1 region on my Free Tier account. This issue has occurred on 3 brand new instances, even inside a brand new, wizard-created VCN. I have verified my entire setup and can confirm the following: 1. The Nginx service is active and listening on 0.0.0.0:80 (confirmed with `sudo ss -tulpn`). 2. An internal request from the instance (`curl http://localhost`) successfully returns my website's HTML. 3. The VCN Security List has a stateful ingress rule allowing TCP traffic on port 80 from source 0.0.0.0/0. 4. There are no Network Security Groups (NSGs) attached. 5. The local OS firewall (`iptables`) has a rule at the top of the INPUT chain to ACCEPT TCP traffic on port 80. (You can attach a screenshot of your `sudo iptables -L INPUT` output here). 6. External port check tools (like YouGetSignal) and the OCI Cloud Shell both report that port 80 is closed (often with "No route to host" from Cloud Shell). This strongly indicates a platform-level block on my account that is not visible in the console. As I am on the Free Tier, I cannot open a support request. Can anyone from Oracle investigate or suggest if there's a known policy causing this for new Free Tier accounts? Thank you.