The error occurs connecting app inventor with microbit by bluetooth

The microbit can connect with app inventor by bluetooth but when in push the button to turn on the led, error 3300 shows up like the image below. I uploaded the extentions for bluetooth and microbit LED. How can i fix this. and I read the old post which is same cases like me. but the replies said the bluetooth extention is old. I used 20200828 version of bluetooth extention.

Please show your blocks.

To download a high-quality image of your blocks, right-click the blocks you want to download and select Download Blocks as Image.

the blocks are written in Korean letters and I refered to a book.

have you solved it?
Please set the BluetoothDevice property.