From first post:
• Oversea Bank Transfer : Max RM20,000/day, RM30,000/mth, Fee : Refer to BP Apps
1) Are these maximum transaction amounts applicable?
2) Has anyone here converted Ringgit Malaysia to Singapore Dollar in BigPay App, and then transferred Singapore Dollar in savings account in Maybank Singapore, CIMB Singapore, DBS / POSB, OCBC Singapore and so on?
3) How does BigPay deduct my money (in Ringgit Malaysia) for oversea bank transfer? Via FPX? So, I do not need to reload my BigPay card first for the oversea bank transfer, right?
4) Roughly how many days does the oversea bank transfer require to be completed?
5) How can I download the PDF file of the oversea transfer receipt?
Thank you very much for your clarification.

It is a direct transfer from your account to Singapore account. Conversion rate follows MasterCard rate. Receipient gets it after 1 working day. For receipt just click your transaction, share receipt to send PDF.