R6220 Access Control not working

Try using a different firmware if ti works so we can report it. 

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rvxfahim wrote:

From the "attached devices" section, if i go to access control page then I cannot activate it. Ticking and clicking apply doesn't work.

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Try a different browser. Someone reported here recently that this regained control of this setting.

Then again, who knows how you are connected to the router? Your message is thin on details.