Should I keep my focusrite 2i2 if i’m not gonna use it with my mic? Or should I return it?

Should i keep my focusrite 2i2 if i’m not gonna use it with my mic? Or should i return it?

I just bought a new Shure Mv7+ microphone and a focusrite 2i2 (4th gen) anniversary edition Audio interface.

I got my focusrite first
But when I finally got my Mic, i learned that the shure Motiv mix app doesn’t work when’s it connected to XLR. Only By USB.

I paid $172 for the focusrite and $269 for the MIC. I don’t even use the interface. Do i really need it?
Should I keep my focusrite 2i2 if i’m not gonna use it with my mic? Or should I return it?
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