Account Banned for 30 Days

Hi all, :waving_hand: for some reason that I am not quite sure, my account by the name of Cl0udw0lf has got banned for 30 days. I checked my inbox immediately and found no any notifications. I tried to reach Niantic Support by email and appeal by the form, yet no luck and they said that the ban is Final. (I realized that I might be too emotional, thus conversation might not end well and come up with solution… well its 6 PM after office at Monday…)

I still somehow cant accept that as I felt never intentionally crossed their rules. And I spent some cash in the game, by buy Remote Raid Pass often during last few events.

Is there anyone can help me, what did I do wrong and how can I correct that. Thinking to pass another 30 days without access to the game is frustrating already.