Instagram account canceled with no reason by unknown

Until November **th I could post regularly on my Instagram account (username: robycasto, email: *****@***.com), even if my account was targeted several times by hackers (I found my contact email, username and profile pic changed. I solved changing my password and activating the * step authentication).*Suddenly, I couldn't access my account anymore: i tried requesting an access link to change the password, but my account is indicated as inactive or nonexistant. I tried creating a new one with the same email and phone number, but they result already in use, even if I still can't access links.*On top of this, I haven't received any email notification about changes on my account, neither requests of * step authentication.*My contacts can't see my account anymore, and my messages disappeared as well (I asked friends I chatted with in the past to check).

I didn't get any communication about this, no notification, and I only found my account canceled all of a sudden

Reactivating my account

Tried to contact the Help Center for this, got a first answer asking for more info, but after my response I got no further feedback