Yes, you can change the slug used in the coupon print-view URL from the plugin settings.
By default the print view lives under a cctor_coupon slug in your permalinks. To change it, go to Coupons > Options > Link Attributes / Permalinks and set your preferred slug there.
After you save a new slug, flush your permalinks so WordPress recognizes the new URL: go to Settings > Permalinks and click Save Changes (you do not need to change anything on that screen, just saving is enough). If you skip this step the print view can return a 404 until the rewrite rules refresh.
If the print view still returns a not-found error after changing the slug, see Troubleshooting 404 Errors. For how the print view works overall, see Printing Coupons.
