Cant update plugins

[nadiasns]

Hello,

in update history http://doc.snstheme.com/wp/anton/#Update_History you wrote that last version of this template compatible with plugins:
WPBakery Visual Composer version 5.1.1,
Slider Revolution version 5.4.3.1

but when i tried update this plugins I have error: An error occurred while updating WPBakery Visual Composer: To receive automatic updates license activation is required. Please visit Settings to activate your Visual Composer. Got Visual Composer in theme?

(i has been updated this template to latest version 2.1)

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