Hi, I am experiencing the same troubles with Android 7 Huawei P9 Lite phone... It s impossible installing and/or using the app...: It crashes continuosly in different fases of the installation progress or of the use (in the rare cases in which you are able to install it!!); sometimes the app crasches and go in a restart/crash loop; Voices does not works (not compatible with system language error!)... Asked to tom Tom Support and they are still investigating!
I do not know what to do with my tomtom Vio now... :-(