Hi Ken, indeed we are planning a block to replace the widget for the next release. In the meantime there is the shortcode. PLease know that the widget is basically the same as setting parameters on the shortcode, so all that you created with the widget is (in theory) also possole with the shortcode.
Have you read https://premium.status301.com/knowledge-base/coolclock/shortcode/ ?
Please tell me what you wish to accomplish exactly so I can give you more specific instructions 🙂