sorry anyone，i find the Reason，is my creat certificate Method is wrong.Maybe you need to try another VPN service? I use OpenVPN GUI 2.4.7 and it works Just great.
VPNs with router support
I hope its not a spam, if so, please delete my post. Cheers
chain=prerouting action=mark-connection new-connection-mark=web-video passthrough=yes protocol=tcp dst-port=80,443,8000,8080 connection-bytes=500000-0 connection-rate=60k-12M log=no log-prefix=""