My video calling is not working


    I have a Galaxy S6 and my mother has the new Galaxy Note 7 and we can not get the video calling to work. Both our buttons are greyed out, and when she tires to call her video will turn on until I answer. Mine will not do that, but used to when she had her Note 5. We are both on the same plan, both have VoLTE enabled AND WiFi Calling enabled. How do we fix this?

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