Xteink Unlocker - X4 fails to connect to hotspot

Hi,

I'm trying to change the stock firmware to Crosspoint on my new Xteink X4.

I tried flashing via USB using the web flasher, however, I suspect my device is one of those models that have this blocked (I ordered this a few weeks ago on AliExpress, shipping from China).

I found Xteink Unlock tool which can supposedly flash the firmwire via WiFi, however when I get to the point where I need to connect the device to the hotspot, it fails to connect to it every time.

I see the hotspot the app sets up, everything looks good with it, yet I cannot connect to it with the X4.

I was abble to connect the device to a different network without an issue, so I don't think the problem is with the device's WiFi module or anything.

Any ideas would be greatley appreciated.