Welcome to the garage.
The video is not showing well what the indicators do during the starting. How is the battery voltage before starting?
Will it stay running when you push the accelerator more?
Can you do the keydance, to see if any hard fault will show up: ignition switch OFF-RUN three times and leave in RUN at tjhe third time. The odometer will show DONE when no faults stored, or the fault code(s).