You can earn two tax-free savings bonuses that will be paid into your bank account and not your 'Help to Save' account. The bonus is based on how much you have saved, even if you have taken money from your savings, you could still be entitled to a bonus. However, you will be affecting your chances of earning the maximum bonus by doing so.
The first bonus is paid at the end of the second year and will be 50% of the highest balance saved. So if you saved the maximum £50 every month at the end of the two years you would have saved £1200. Your bonus would be 50% of that - £600.
The second bonus is paid at the end of the fourth year and is 50% of savings you pay into the account above the highest balance you have saved. If you continue to save £50 a month you will be adding another £1200 to your savings pot and will receive another £600 bonus.
If you withdraw all the money you save after two years and then carry on saving you will not get a bonus in year four because your highest balance would never go over £1,200.