Hello @TheLex
Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing with your mobile sync. Thank you for letting us know about the issue. I'm wondering here if we may need to resync the cloud on your primary file in order to see if we're able to add the missing accounts. I'll leave steps on how to do so down below.
You'll need to sign out of the Mobile App and sign back in:
Once you get a chance to try these steps, please let us know what you find. From there we'll better understand our next steps.
Thanks,
Quicken Francisco