Redirect to 404 after clicking purchase instead of popup paystack payment page

Hello Developers,

I am using paystack on my store, and after configuration, i noticed that after clicking on purchase on my store i am redirect to 404 instead poping up the paystack payment page which i enabled
Please I need help, how do i fix

Here is the 404 link structure i redirected to > https://dreamteamnetwork.sortafter.com.ng/order-pay/1161/?key=wc_order_sq06LdDtCV9gU