On Digitone, you are in Chromatic mode by default. The trigs represent the notes as a piano roll.
If you switch to Grid mode, you will see that your trigs certainly work perfectly.
Read the manual, take the time to know it better.
If you see anything wrong, report it here. But if it was user mistake please make it clear that you were wrong.
Have fun with this little beast, I feel like it might be the best synth I ever had.