These QR codes can be used in 3 ways
A) Scan a QR code from your TKWallet app, then type the amount (when requiered) and confirm the transaction.
B) You can access your EDUCoin wallet on the TKWallet app, press SEND and then scan the QR
C) You can COPY the specific payment address, then you press SEND on your EDUCoin wallet and then tap the "Paste from clipboard" button
Every EDU paid in this section will be automatically refunded on your same wallet in less than 24 hours