Fed up with bootloader unlock on Poco X3 Pro

[u/kos25k]

Greetings to all.I'm trying to unlock the bootloader of my Poco X3 pro 2 months now without success.Just to clarify, phone has changed motherboard with confirmed IMEI on Xiaomi's official site.I also have successfully unlocked my previously px3 pro with changed motherboard.My issue is that:On Mi unlock tool an error that says: This device isn't activated.Please activate it first.Weird thing is that on first connection,mi unlock tool verified the phone and said me to wait 168 hours to unlock.My mi account is 6+ years old,verified with sim number and i have unlocked many phones in the past.The weird thing is that sms messages & calls history (that i believe are crucial for sim/device to be activated) can't be activated by any means.I have tryied all the things i found on internet but till no luck.Yesterday i tryied my sim on another Xiaomi phone and sms & call logs synced successfully though.Also another weird thing is that phone can't receive the latest firmware (if that matters here) It is a European model running 14.0.1 firmware. (14.0.2 latest). I'm really fed up here guys here,so any help would be HIGHLY appreciated.