You don't even have to tweet before you get blocked. I created an account, after a few minutes of looking around, I was blockeed. (Still blocked, because not worth it.)
Were you on VPN/Tor, not that I'm implying it's a legible case to block; but I've read VPN/Tor usage on Twitter will lead you to mobile linking inevitably due to said issue.
I had the same experience. Not on VPN/Tor/anything. Before I even posted a single tweet I got blocked by a generic "our algorithms think you violated community guidelines" or something.