I thought it was already established that TnG cards are made offline due to the fact that in the early 2000's, internet connection was slow and unreliable, therefore the value/ balance is stored inside the TnG Card instead, but in modern days, we shouls screw PLUS for refusing to implement PayDirect.

PLUS are the troublemakers

Not sure about the early naughts, but nowadays confirmed they are stored in their servers because we can check our card balance in the TnG app.

Oh I also forgot to mention paydirect via TnG card not working on closed toll highways.

It's really not rocket science, it's all politics. Just ridiculous.

whats the purpose of storing it in the card?

Even tho old tech, theoretically now the card only need to store the account ID to query the balance from server......no need to store the balance in the card itself, just like RFID system lah (please don't tell me they store the balance in the RFID tag also )

I dunno how much it would cost them to change to system, but c'mon la get on with the times FFS.