TA0CCR2 in ez430-2500 Data logger

I'd like to show an alarm icon in the lcd screen of my ez430-2500 Chrono every 10 seconds.

I have created a function to initialize the Timer0_A2 and other to stop it.

I'm in Continuous mode.

The problem is I only can show this icon every 2 seconds (2 seconds off, 2 seconds on - Period=4seconds).

I don't know if the problem can be that the TA0CCR2 have to be always smaller than TA0CCR0 or FFFF (it is 32767 and the clock source is 65536).

The base code is the example code that comes with the chrono. The changes in timer.c are in bold (there is not all the code, only what I consider important to show):

void Timer0_Init(void)
{
    // Set interrupt frequency to 1Hz
    TA0CCR0   = 32768 - 1;

    // Enable timer interrupt    
    TA0CCTL0 |= CCIE;                     

    // Clear and start timer now   
    // Continuous mode: Count to 0xFFFF and restart from 0 again - 1sec timing will be generated by ISR
    TA0CTL   |= TASSEL0 + MC1 + TACLR;                       
}

void Timer0_A2_Start(void) //this function is called when I push DOWN button
{
    // Update CCR
    TA0CCR2 = 327680; // 10 seconds

    // Reset IRQ flag
    TA0CCTL2 &= ~CCIFG;

    alarm_on=1; //variable to blink the icon

    // Enable timer interrupt
    TA0CCTL2 |= CCIE;
}

void Timer0_A2_Stop(void) //this function is called when I push DOWN button the second time
{
    // Clear timer interrupt
    TA0CCTL2 &= ~CCIE;
}

#pragma vector = TIMER0_A1_VECTOR
__interrupt void TIMER0_A1_5_ISR(void)
{
    u16 value, value2;

    switch (TA0IV)
    {
        // Timer0_A1    BlueRobin timer
        case 0x02:    // Timer0_A1 handler
                    BRRX_TimerTask_v();
                    break;

        // Timer0_A2               
        case 0x04:    // Timer0_A2 handler
                    // Disable IE
                    TA0CCTL2 &= ~CCIE;
                    // Reset IRQ flag
                    TA0CCTL2 &= ~CCIFG;
                       TA0CCR2+=327680;

                    // Show icon
                    if (alarm_on){
                    display_symbol(LCD_ICON_ALARM, SEG_ON);// showing the icon on the lcd screen
                    alarm_on=0;
                    }
                    else{
                        display_symbol(LCD_ICON_ALARM, SEG_OFF);// hiding the icon on the lcd screen
                        alarm_on=1;
                    }

                    // Enable timer interrupt
                    TA0CCTL2 |= CCIE;
                    break;
       
        // Timer0_A4    One-time delay            
        case 0x08:    // Disable IE
                    TA0CCTL4 &= ~CCIE;
                    // Reset IRQ flag  
                    TA0CCTL4 &= ~CCIFG;  
                    // Set delay over flag
                    sys.flag.delay_over = 1;
                    break;
    }
    
    // Exit from LPM3 on RETI
    _BIC_SR_IRQ(LPM3_bits);
}

Please, I'd be glad if someone help me,

Thank you.