I know it's an English album, but it usually only affects the Korean charts, not album sales. I am very confused.
Anyway, if that's the case, I hope that Cube can just stop making them releasing English album in the near future and just focus on promoting Gidle in Asia, especially Korea and China. I think that not all groups fit in the west and don't even need to promote themselves there. Some groups naturally have it, but for those who don't, it is not a wise strategy to release albums for promotion there, especially if they are doing very well in their own country. It's better to focus on their strongest markets first. If they want to test the water, they can just release an English single as one of their TT in their normal album. Like most groups did.
Gidle is still a new top group. They had 3 hits in a row in Korea so this English released feel too soon especially when their album sales showing their biggest market obviously in Asian countries. Maybe just me. But it will be amazing if they try to expand the group in Japan instead. They already have Korea and China, the two biggest consumer of kpop so Japan will be a huge bonus. They have the most loyal kpop fans.