User blog comment:Nanamin/Bypassing the DMM Error Area/@comment-125.192.155.49-20160622163115/@comment-26171095-20160623001210

If you can get the cookie method working, you don't need the VPN. If you can't get the cookie method working, the only way to shut it off would be to grab your API link and connect to that without the VPN as DMM is the only one that checks whether you're a foreigner.

You can switch the timezone back at any time but if you get an error, then it actually has to stay in GMT+9. Personally, I don't even bother having my time in JST, but I get no errors at any point.