I'm encountering some problems as well. I tried the bypasser method but before the log-in screen appears (After the loading bar) some sort of error written in Korean Characters appear. The game still stays but after you enter your log-in details, the game closes.
Using the Copy-paste method, I'm able to copy all files before the loading finishes however, as the loading finishes, the same error in korean characters appear yet again.
I tried bypassing it again and it sometimes goes through, however when I log-in, all item textures that are Non-Shop (buyable in shop) items (dungeon drops, event rares, gacha, limited edition cash items etc.) don't show up. so just random chunks of floating textures per character.
And when I try to start a dungeon, pvp or practice mode, the game just shuts down.
I'm using GCPH by the way, so I think that the Problems are connected to each GC region's respective system...