Yes, a per new process, we need to send documents as an email attachments there is no portal anymore to upload the documents.
Once you paid the fees, it will let you know the next steps, where you saw this information where to upload documents, there in bottom, you can print/download your checklist and application form.
All the LORs and Evidences, CV should be in PDF format not necessarily scanned, as you already have got them in soft copy.
You can simply attached your checklist, CV, LORs and Evidence in email attachment provided on in ‘next steps’ page after you made the payment.
Once you download the checklist, the first paragraph contains your UAN and details.