I have sent feedback on the parental control issue via the new beta UI. If ASUS fix (activate) parental control on it I can update FW for daily use. As it stands I will revert back this evening, parental control is a must for me with schools re-opening.
The firmware you received was via an email with a download link I assume, so maybe worth also sending you comments to the Engineer whom sent you the download link . the feedback option via UI is good, but they receive so many it maybe missed .
Mention UK Sentinel asked you to send via email also, that should stop any possible negative response. 
In a completely sane world, madness is the only freedom (J.G.Ballard).
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