The original Boost (red label) and TnG (blue label) QR code is still valid. Just use the appropriate ewallet to scan it. Boost scan Boost, TnG scan TnG.

The latest DuitNow QR (pink label) still has weakness. If the DNQR is provided by BANKS , most likely eWallet fail to detect it. If I'm not mistaken, only DNQR by MAE (register as merchant) can accept payment by ewallets successfully.

GrabPay scan MAE DNQR,  successful, NO POINTS EARNED.
Boost scan MAE DNQR, successful, can get Boost Coins.
TnG scan MAE DNQR, successful, as usual (no cashback)