STSPIN32G4 VCC is stucked in 8V and not changed

I designed custom BLDC driver using STSPIN32G4.

Current sensing unit and magnetic encoder unit is succesfully works.

However, the motor is not initialized and spins at all. Actually, no current flows into the motor phase lines.

I have checked that VCC should exceed 8V to activate gate driver.

So, I tried to supply various range of voltage input from 10V to 30V but the required voltage is stucked in 8V and not changed at all.

Is there anyone who have struggled in this kind of problem or have any ideas to solve?

Thank you for your help in advance.