Meaning:

“断” means to “discontinue,” and “更” is short for “更新,” which means to “refresh one’s social media account status or online novels.” Therefore, this term coined by Chinese netizens means to “stop refreshing one’s social media account status or online novels, often temporarily.” Similarly, another term called “停更” means to “stop refreshing them for good.”

Example:

A: 有个知名的网络小说作家断更了。

Yǒu gè zhīmíng de wǎngluò xiǎoshuō zuòjiā duàngèng le。

A well-known online fiction writer has stopped refreshing his works.

B: 你说的是唐家三少吧，听说是因为他的妻子患癌症去世了。

Nǐ shuō de shì tángjiāsānshǎo ba，tīngshuō shì yīnwèi tā de qīzi huàn áizhèng qùshì le。

I figure you’re talking about the guy behind the alias Tang Jia San Shao. I heard it’s because his wife recently died of cancer.