IPsec VPN Tunnel up between OpnSense and DrayTek3900 but no ping

[sc0ttjm]

I have an IPsec tunnel that is showing as up and connected but I can't ping devices on either side from the opposite side or from the OpnSense firewall itself to either side.

I set off a continuous ping on both sides and had a look at the firewall live view and filtered by SRC IP and it shows nothing no matter which machine I try it from on either side of the connection.

Please can somebody help me?
Thanks