Softether VPN Client no RX on OpenWrt

I wanted to try SoftEther VPN Client on openwrt, I get the client connected to a VPN server but no RX only TX.

on windows i could connect with soft ether client app and everything worked.

VPN Connection Setting Name |tr6
Status                      |Connected
VPN Server Hostname         |x.x.x.x:5555 (Direct TCP/IP Connection)
Virtual Hub                 |VPN
Virtual Network Adapter Name|tr
vpn_tr    Link encap:Ethernet  HWaddr 5E:DB:BB:66:25:5C  
          inet6 addr: fe80::xxxx:xxx:xxx:255c/64 Scope:Link
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5221 errors:0 dropped:1926 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:1546457 (1.4 MiB)


Remote:x.x.x.x:5555 (Direct TCP/IP Connection)
VPN Connection Setting Name:tr6
Session Status:Connection Completed (Session Established)
Server Name:x.x.x.x
Port Number:TCP Port 5555
Server Product Name:SoftEther VPN Server (64 bit)
Server Version:4.38
Server Build:Build 9760
Connection Started at:2022-07-05 (Tue) 22:55:03
First Session has been Established since:2022-07-05 (Tue) 22:55:14
Current Session has been Established since:2022-07-05 (Tue) 22:55:14
Number of Established Sessions:1 Times
Half Duplex TCP Connection Mode:No (Full Duplex Mode)
VoIP / QoS Function:Disabled
Number of TCP Connections:2
Maximum Number of TCP Connections:2
Encryption:Enabled (Algorithm: TLS_AES_256_GCM_SHA384)
Use of Compression:No (No Compression)
Physical Underlay Protocol:VPN over ICMP (IPv4)RUDP/ICMP
UDP Acceleration is Supported:No
UDP Acceleration is Active:No
Session Name:SID-MOSMOS-3053
Connection Name:CID-3187
Session Key (160 bit):xxxxx
Bridge / Router Mode:No
Monitoring Mode:No
Outgoing Unicast Packets:0 packets
Outgoing Unicast Total Size:0 bytes
Outgoing Broadcast Packets:113 packets
Incoming Unicast Packets:0 packets
Incoming Unicast Total Size:0 bytes
Incoming Broadcast Packets:0 packets
Incoming Broadcast Total Size:0 bytes