The transmitter can connect to the VCR audio record out on the receiver but might not work with sources connected with digital audio to the receiver. You can try connecting it to the headphone jack on the front of the receiver. This connection unlike the VCR record out is controlled by the receiver volume control so keep the volume low. If you turn it up too high you will hear constant distortion on the headphones.
Your solution worked. I thank you very much. With the Mpow-Bluetooth-Transmitter, I was able to pair with the Oticon Streamer. Now the sound from the receiver is transmitted directly to the hearing aids.