I deployed a server on Vultr and used the shadow socks v2ray instructions. I can verify my config works, using devices outside of Iran. However when friends in Iran use the config they cannot connect. I followed the instructions and have verified my settings match that on the guide (I assume that this would be some config error with Arvancloud), and everything seems to be correct (see attached image).

Any idea on how to start troubleshooting this or what might be the cause of this malfunction?