Openvpn cannot be used to solve the problem

Which model? Firmware version?

Seems the log is saying no cipher is supported. Don’t know why because it should be supported in the client side.

GL-MT300N-V2 The version number is 3.215

Lowering the version also seeks a solution

Based on the info I cannot tell.

Maybe you can pm me the ovpn to check. You can also write to us via email support at glinet.biz