The website is a bit wonky but instructions are there:
Two-way courier service : Due to the ongoing Covid-19 outbreak, the Visa Application Centre is only accepting applications for biometrics exempt applicants via the courier service offered by the VAC. All passports will also only be returned using the courier services offered by the Visa Application Centre.. To avail this service, please write to vfsshippinglabels@vfsglobal.com (For New York VAC) or shippinglabelsla@vfsglobal.com (For Los Angeles VAC) by following the laid down process in “How to apply ” page of this website.
I believe the response to email will give instricrions on how to pay.
Or follow the instructions above and contact them directly
Two-way courier service : Due to the ongoing Covid-19 outbreak, the Visa Application Centre is only accepting applications for biometrics exempt applicants via the courier service offered by the VAC. All passports will also only be returned using the courier services offered by the Visa Application Centre.. To avail this service, please write to vfsshippinglabels@vfsglobal.com (For New York VAC) or shippinglabelsla@vfsglobal.com (For Los Angeles VAC) by following the laid down process in “How to apply ” page of this website.
I believe the response to email will give instricrions on how to pay.
Or follow the instructions above and contact them directly