If you we're using remote proxy port 3128, well it's not working anymore. You can choose either 8080 or 8000, if still not working, the payload may be the problem. You can enable custom payload, choose either http injector or payload generator to generate your custom payload and copy and paste it into PHC Official VPN. Easy as that!
AT10 Promo: Choose either FaceBook Based or ViBer Based Payloads.
AOC20 Promo: FaceBook Based Payloads.
You can use search bar, and find FaceBook or ViBer Based Payloads.