I have been on Talktalk phone support and chat to resolve this but nobody seems to know what to do. Everyone in the household is unable to send or receive messages through whatsapp when connected through wifi. No problems on identified when using other networks.
The issue was resolved briefly when asked to switch off scam protection but quickly returned.
Hi jmboule01, did you turn scam protection back on or has that gone back on automatically?
The quickest way to fix this while I get it sorted by fault ticket is to change the DNS setting in your router to non TalkTalk DNS. If you use 184.108.40.206 and 220.127.116.11 you'll have no problems with Kidsafe interferring.
I have changed the DNS as instructed and all seems ok.
As you mentioned, this is bypassing all homesafe settings of which I not happy because I have kids in the house who needs some kind of protection.
I hope this gets sorted pretty quickly otherwise i will be looking elsewhere.
I've appreciate that it's far from ideal and the ticket is over with Networks for further testing hopefully you won't have long until it's fixed.