@momihunter Hey there, I'm sorry to hear this is giving you trouble, and I apologize for the frustration. Did you happen to try the steps that Ubi-Nacho had mentioned previously? If not, here they are again for your convenience. >>
Please try the following troubleshooting steps found here, to see if it helps with your voice chat issue.
In addition to this, could you please make sure your microphone is set as "Default Communication Device" in your settings.
Then also make sure that your microphone have the proper right in your Windows:
1. Open your “File Explorer” and click on “Control Panel”. Then click on “Hardware and Sound” and then click on “Sound”.
2. Click on the “Recording” tab and then select your microphone (i.e. “Headset mic”, “Internal mic”, etc.) and click "Properties".
3. Click the "Advanced" tab. Click on the check mark in the box next to "Allow applications to take exclusive control of this device" to remove the check mark from the box. Then click "Apply".
To help with your connection to Ubisoft's services, could you make sure all of our connectivity troubleshooting has been followed, to help reduce the chance of disconnecting in future?
Please let me know if you continue to have issues after this.