Thank you very much for your effort to make this wonderful add-on usable under tb 78.
Main features are fully functional. However, I notice that, since the last version (replace moment with sugar), some dates (for example in the "send at" field) are not localized. That's why a star is missing.
Created Github issue at https://github.com/Extended-Thunder/send-later/issues/154. You can follow it there if you want to find out when this is fixed.