B1B2 Unable to schedule appointment and pay fees

Hi Friends,

My wife and I are Indian citizens and permanent residents in Canada. My wife applied for a tourist visa to go to USA two weeks back by completing DS160. However, after completing the form, we did not get any link to pay fees and schedule an appointment for B1B2. I know the wait time is more than 300 days in Canada currently . But we are not even able to schedule an appointment for next year. The email they sent after completing Ds160 did not have any payment link or visa appointment booking link. We are breaking our head trying to see online for a link to pay the fees and book an appointment. It would be really helpful if anyone could help us out and send us links and instructions on how to pay fees and schedule tourist visa appointment in Canada.