I don't quite understand the changes to the climate card; what should I do?

I heard that the climate card I was recharging every month with discounts will end in August. I thought July was the last month, but it turns out it's usable until August. It's now mid-August, and I've already spent 55,000 won on transportation using my bank card. What should I do next month? If I keep spending like this, it seems like it could reach 80,000 to 100,000 won. Moreover, next month, a friend from the U.S. is visiting, and it seems like we will be using public transportation a lot. Usually, when friends visit, I would recharge a one-week climate card for them. This time, they might stay for about a month, so I'm curious about what to do. Is there anyone who can explain the information about the new card clearly, as I'm a bit confused?