If you see a blank batch payment page, the reason is likely that you don't have any payables that are ready to be paid in batch.
We don't generally support batch payment for every network. The list of supported networks for batch payment is here.
Additionally, the payables need to be in status from where they can be paid:
For Bills:
The bill is in "Approved" status (click to select a bill and approve it first)
For Payroll/Direct Payments:
The payment is in "Awaiting Payment" status
For Expenses:
The expense report is created