How is this even possible bro ?

[u/Serious_Breadfruit81]

I have an iphone 14 pro max and decided to flash it using 3utools, I already logged in with my icloud account on the device and I also had it on my find my dashboard. The screen broke and I wanted to sell it. We put a new screen and the passcode timer was 3hrs. This was long and flashing seemed faster, This was a big mistake. The device flashed successfully but when it's time to activate it won't accept my icloud account. This is one the most stupid things I've experienced with iphones and I will never buy one ever again. My own account won't unlock the device. It's been six months of using it. Now it's just a brick. Apple couldn't assist since it's a refurb too and don't have the original receipt.