I'm paying via mobile. I already have 135 load balance on my phone but after entering the pin they sent me it said i dont have enough credit but the price was only 129 php.
Apologies for the late reply, but maybe I can still help :)
Have you tried to use an incognito tab, clear the cookies of your browser and use another browser or device?
When this doesn't work, you should try to use another internet connection (e.g. cellular data instead of WiFi).
Have a nice day!