Everyone can get my texts, except one person

ken52787@gmail.com

    I see other threads about digits breaking SMS altogether for people with third party phones, but I'm having a variation on the issue. After setting up digits on my T-Mobile LG V20 (one number, multiple devices), my SMS works for everyone I've tried except one person. This wouldn't be a big deal except it's my fiancée. She is not pleased that I can't reach her. She is not enrolled in digits, but we're both on the same family plan.

     

    I get her texts but she doesn't get my replies. I've sent from my phone and the web interface, neither get thru to her.

     

    Here's my situation:

    Phone: LG V20 (T-Mobile branded)

    VoLTE: Enabled (but I've tried with it disabled, doesn't seem to help)

    Wi-Fi calling: Enabled, but set to cellular preferred

    Texting app: Textra

     

    Here's her details:

    Phone: Nextbit Robin (unlocked)

    VoLTE: Enabled

    Wi-Fi calling: Enabled, but set to cellular preferred

    Texting app: Google Messenger

     

    Any ideas? I am willing to opt out of the beta if we can't find a solution, but that doesn't appear to be possible without going thru support as well.

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