Torque sensor

#1
Has anybody had trouble with a stromer st1 torque. Sensor I changed the display and my bike will go but after a few miles it`lol go sluggish like a dead cell in the battery then it`lol stick on full throttle I have to kick in no power to stop
 

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#2
Yes. I have an ST1. Had an accident where the rear derrailer bracket was bent. Everything works fine, but occationally when I turn on the bike, the power is more sluggish than normal. I am very careful not to touch the pedals when turning on the bike. However, usually turning the bike off and on again (once or a few times) will restore the power.