On Monday, the social site was preventing users from posting tweets that included IStandWithPhil.com, an online petition launched by a group called Faith Driven Consumer demanding that A&E reinstate Robertson.
Twitter removed the block late in the day, saying IStandWithPhil.com had been “mistakenly” identified as spam.
“The URL IStandWithPhil.com was mistakenly flagged as spam tonight, by an outside organization that tracks spam sources. We have restored access and apologize for the error,” Twitter said in a statement to news site Marketing Land.
According to Faith Driven Consumer, the Robertson petition now has more than 200,000 online signatures.