After this once-great card was heavily abused, its benefits were slashed significantly; see here. On Reddit, there are plenty of DPs showing that by telling the bank the benefits have been cut too much and asking for some compensation, you may be able to get the annual fee refunded for that year. Readers who still want to keep this card may want to give it a try, YMMV.
https://www.uscreditcards101.com/cnb-crystal/