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If you read my previous, I already told.
I can use VPN, however I can't claim my code since the site only loading without redeemed my code. That's mean, we can't do shit about that (Indonesia it's a third lowest country with a shit internet).
Using VPN, make your internet more slowly. Imagine, you already have a slow internet and make it worse. I hope they here a feedback to star build mirror link.
I've never experienced the same thing before but maybe because I'm using a different service (my internet speed is 80/100 mbps) may i know your average internet speed?
I guess you are using a network other than indihome? indeed when I activate the VPN my speed is reduced by 10-15% but still can work to claim code from Duelbits.