Digitize VHS cassettes on laptop but no picture?

Hi everyone, I ordered the converter stick from Amazon. I connected everything correctly (following the instructions), but unfortunately, when recording, there's no picture, but strangely enough, only sound. I connected it to the TV with a SCART cable to see if it was the cassette tape, but I was wrong. What can I do?

I don't understand?

I bought a Bluetooth USB stick, plugged it into the PC and everything worked but my headset doesn't want to connect so I don't know how to do that. Here is my headset https://www.amazon.de/dp/B07W7K5LQN?psc=1&ref=ppx_yo2ov_dt_b_product_details and this is the USB stick for Bluetooth https://www.amazon.de/dp/B088LNPXNN?psc=1&ref=ppx_yo2ov_dt_b_product_details