Blinds stuck at one position

[aschmidt74]

Hi! I use this config, with a sonoff dual:
{
"accessory": "TasmotaMotorMQTT",
"name": "Leinwand",
"hostname": "192.168.6.105",
"secondsDown": 17,
"secondsUp": 17,
"topicStatusGetDOWN" : "stat/leinwand/POWER1",
"topicStatusGetUP" : "stat/leinwand/POWER2"
}
and the blinds are stuck on top, where POWER2 on leads them.
I see in the homebridge log onscreen:
Sonoff link for moving blinds: http://192.168.6.105/cm?cmnd=backlog%20pulsetime2%2063;power2%20on;delay%2063;pulsetime2%20117
and wherever I set or switch the item no other command than power2 on is ever issued.