I have added some logging. If you set the binding to TRACE before sending the command, you should see
18:24:08.268 | TRACE | OH-thingHandler-5 | ntrol.internal.connection.Connection | 285 | Executing textToSpeech TextWrapper{devices=[Device{accountName='Alexa Esszimmer', serialNumber='<redacted>', deviceOwnerCustomerId='<redacted>', deviceAccountId='<redacted>', deviceFamily='ECHO', deviceType='A2DS1Q2TPDJ48U', softwareVersion='9698494596', online=true, capabilities=[VOLUME_SETTING, DS_VOLUME_SETTING, DISPLAY_BRIGHTNESS_ADJUST, DISPLAY_ADAPTIVE_BRIGHTNESS, EARCONS, FLASH_BRIEFING, BT_PAIRING_FLOW_V2, I_HEART_RADIO, PERSISTENT_CONNECTION, GOLDFISH, ASCENDING_ALARM_VOLUME, ALEXA_VOICE, MUSIC_SKILL, TAHOE_BYOD, ALEXA_PRESENCE, PAIR_BT_SINK, TAP_GESTURES, MULTI_WAKEWORDS_SUPPORTED, TIDAL, EQUALIZER_CONTROLLER_MIDRANGE, FACE_TO_TALK, AMAZON_MUSIC, DEREGISTER_DEVICE, CLOCK_FORMAT_24_HR, SET_LOCALE, AUDIO_PLAYER, TIMERS_ALARMS_NOTIFICATIONS_VOLUME, SUPPORT_CALENDAR_ALERT, TEMPERATURE_SENSOR, MOTION_DETECTION, CHANGE_NAME, EFDCARDS, EQUALIZER_CONTROLLER_BASS, SOUND_SETTINGS, AUDIO_CONTROLS, DREAM_TRAINING, TIMERS_AND_ALARMS, TUNE_IN, DIALOG_INTERFACE_VERSION, PAIR_BT_SOURCE, DEEZER, APPLE_MUSIC, ADAPTIVE_LISTENING, SIRIUSXM, VOICE_TRAINING, SUPPORTS_CONNECTED_HOME_CLOUD_ONLY, SUPPORTS_LOCALE, SUPPORTS_SOFTWARE_VERSION, SLEEP, LEMUR_ALPHA, SALMON, SUPPORTS_LOCALE_SWITCH, LOCALIZATION, FAR_FIELD_WAKE_WORD, PANDORA, DISPLAY_POWER_TOGGLE, ACTIVE_AFTER_FRO, UPDATE_WIFI, POPTART, KINDLE_BOOKS, CUSTOM_ALARM_TONE, TUPLE, TUPLE_CATEGORY_A, GUARD_EARCON, SET_TIME_ZONE, SPEECH_RECOGNIZER_USS, ALEXA_GESTURES, EQUALIZER_CONTROLLER_TREBLE, REQUIRES_OOBE_FOR_SETUP, AUDIBLE, TAP_GESTURES_RESUME_MEDIA, GADGETS, TAP_GESTURES_SINGLE_TAP, REMINDERS, MOTION_SENSOR_RANGE_STRING, MICROPHONE, WAKE_WORD_SENSITIVITY]}], text='<speak>Alle Fenster sind geschlossen.</speak>', ttsVolumes=[null], standardVolumes=[25]}
Maybe we can find out whatâs going on. To update to the new version:
Go to the console, type
update org.smarthomej.binding.amazonechocontrol https://download.smarthomej.org/org.smarthomej.binding.amazonechocontrol-4.0.2-SNAPSHOT.jar
Replace 4.0.2 with 4.1.0 if you are on 4.1.0-SNAPSHOT