This is most likely because of this change: [FOLLOW UP ON ITEM] New canisters will only be accessible through the icp0.io domain. Existing canisters will be accessible both through ic0.app and icp0.io
dfx
before version 0.14.0 (which released yesterday) only prints the old URL under which your newly created canister is not accessible anymore. Simply change ic0.app
to icp0.io
and you should be good to go