Thanks so much for reaching out and thank you for using the Resolve WordPress theme with BoldGrid Post and Page Builder!
We inspected your page and it looks like you have your copyright line set up as a custom footer widget. If you would like to modify this text you should be able to do so by navigating from your WordPress dashboard to Customize < Widgets < Footer Center and modify the footer text you see there.
You can also add a Custom HTML widget that will automatically change the year for you. Just add this bit of HTML to your widget:
I hope this helps! Please reach back out if you have any other questions for us.