You cannot connect a 1Gb circuit (that is what you have), to a 10Gb interface.
You must connect to a 1Gb interface.
So what you meant to say is that all the wan circuits which are below 1G speed will not work when connected to 10G port right?
By the way circuit which we have is 300Mbps. In router we have both 1G and 10G port.
If the circuit physical layer is 10Gb (ask ISP), it will work on 10 Gb interface.
Thank you for the nice rating and good luck!