According to the sources, Demi Lovato deactivated her Twitter account following the backlash over her tweets on Grammy-nominated rapper 21 Savage.
Lovato wrote on Twitter on Sunday: "So far 21 Savage memes have been my favourite part of the Super Bowl."
People immediately began calling her out, including rapper Offset, who sort of seemed to subtweet her with the post: "All the memes and s**t ain't funny when somebody going through some," reports eonline.com.
"If you are going to come at me for making a joke, try coming at me with some original not involving drugs," Lovato wrote.
She then added: "F**k Twitter. This is why I don't tweet anymore."
The singer has been over six months sober following rehab treatment after being taken to hospital for an apparent drug overdose last year.