The First Touch Channel seems to be showing correctly (as below):
However, my Last Touch Channel seems to be showing as just "Natural Referrer" and I'm not sure why:
I have checked my Marketing Channel Expiration and Rules and both seem fine.
Any help would be much appreciated!
As @PratheepArunRaj mentioned, it's certainly an issue in the Marketing Channel Processing Rules for the "Natural Referrer" channel as it's overriding on every Hit. You may want to review it.