Why is my Plusnet one router not updating time to British Summer Time?

[#1]

I use the account control to restrict internet for my children. When they came to me when it should working. I investigated and found the time of the router was out (clocks went forward overnight) Why has it not automatically updated and is there anyway to change it manually? 

[#2]

Moderators Note

This topic has been moved from chat to my router

[#3]

Probably a silly question, but did you try switching it off and an again?

Dave

[#4]

There's already another thread on this - you are not alone. Restarting the router doesn't help, and it's almost impossible to ask Plusnet support (online chat has been taken down, and minimum 30 minute wait time on the phone. I've changed the start/end times by 1 hour for now.