When fund will be available to buy after i sell my delivery stock?

I have demat account with Zerodha, i had some share of persistent conisistent in my demat account.

I sold today to buy some another stock.

When i can buy another stock? When that fund which i got after selling stock going to reflect in my account?

With the sale proceeds, you can buy another stock on the same day

80% is received instantly. You will receive 20% on the next day.

I wasn’t able to purchase another stock, fund wasn’t released.

Another question is , if i buy same stock after selling on same day, will it consider intraday or delivery?