This looks more like the chinese version.
The flash layout is basically the whole difference between them.
The chinese version firmware has a 1Mb overlay partition.
The global one has a 2Mb overlay.
If I understand it correctly recovering to a different OEM firmware would change the layout as well. So if you had a global version originally, but did a recovery to a chinese firmware, you have the chinese version now.
So you can try installing this instead:
https://downloads.openwrt.org/releases/23.05.3/targets/ramips/mt76x8/openwrt-23.05.3-ramips-mt76x8-xiaomi_mi-router-4a-100m-squashfs-sysupgrade.bin
It should fit the flash layout you have now.