Why my vpngate server make my internet can’t access websites

[salapao]

I turn on vpngate server relay when more people connect within 24 - 48 hours when they use certain websites such as roblox or other games. Can't get in but my ping works fine. I run it through proxmox and router. I use opnsense Dns server i use pihole and the speed from my isp is 500/500 and using it the maximum speed is only 100 mbps which has not much use at all But it makes some websites unable to access.