One of the risks that clients may have to face of using this platform is that if internet may fail and your not able to access your account.
This is the common problem for every services that using internet as the main way to access it. Fortunately, programmers already know how to handle such problem and it won't make a headache nowadays.
You are right, technologies have already developed so that the loss of the Internet will not disrupt the work of the platform.
And that is the best thing in utrust. It will work even without internet because it's decentralized