ZAR payments
SID Internet EFT
SID is a South African instant-EFT product. Older casino guides treated the name as if every rand cashier used it. That is no longer a safe assumption.
The word SID did not appear on the Springbok, Silversands, White Lotus or Apollo pages opened for this update, nor on the Gbets or Hollywoodbets HTML we could read. Springbok does show Instant EFT and EasyEFT marks. Those are related methods, not proof of SID.
If a cashier still offers SID, the flow is an instant transfer from your bank, in rands, into the casino balance. Check the payment confirmation inside the bank, then the casino cashier. If SID is not listed, use the instant-EFT option that is listed rather than hunting for the old name.