Eight months later, my appeal worked and I got it back and was told it was an error in automated spam detection. Eight months! It was a 12 year old account. For those eight months I couldn't even get support to reply.
Twitter has been garbage for years. The app is a great idea, I hope it gets fixed.
"We’re writing to let you know that your account has been suspended—and will remain suspended—due to multiple or severe violations of our platform manipulation rules"
I am a very boring person and there was zero chance I had done anything like this.
I was able to appeal ~5 times over 6 months and finally got my account reviewed by a person. They restored it and apologized that I was swept up in a spam cleanup. I don't tweet much but I am a daily user.
That and the censorship led me to deleting my account.