Enable payments after order receieved

Hello

The plugin is great but the problem it disable checkout totally

I need to disable only the checkout in the normal sequence, the customer submit order without payment

Then I will add manually some fees like shipping and handling fees and resend invoice to the customer to pay it using the available payment options.

But what I get when paying invoice like this message ”?This order’s status is “Pending payment”—it cannot be paid for. Please contact us if you need assistance.”

So hope you help fix this issue