Twitter is now BANNING accounts that post links to other social media platforms. You're no longer even allowed to tweet out what your username is on other sites.
You basically need an attorney to let you know what you can and cannot tweet.
This is unprecedented censorship.
“Any attempt to remove my tweets that link to my other social media accounts, not violating any law, would actually make #twitter an editorial media, and no longer a social media platform, with civil and criminal liability for *any* illegal content therein. https://t.co/kwoFHVue43”
MeidasTouch 
Anarchic Teapot