@Alvaromusic_@aftaab1996 I'd call it a Niantic crackdown. When/if the scanner will come back up is out of my control, but if it does, it will be posted here on this Twitter account.
We are aware of a major issue affecting scan reliability and are investigating. If your scan is failing, keep retrying and it'll hopefully go through eventually. I am not able to provide an ETA for a patch.