Note: Erase Device will erase your configuration and last used rolling code counter. Before you use this option, open the Logs & Console, send a command to your opener and take note of the last used counter. Then after flashing, send an mqtt set_code_counter command to restore the counter value and then sync with the opener. See docs.
If you want to use ESPHome with Home Assistant instead of MQTT, check out the 3rd party ESPHome installer & GitHub Repo.