A few days ago WhatsApp stopped working when I connect to the wifi network of the deco m4 range extender and when I connect directly to the wifi of the main router it works fine. All other sites work

I have a problem in whatsapp when i connect wifi, all site work good

Hello I have setup a Mesh network using 3 X Deco M4 units which has totally transformed our internet! They are amazing! There is one problem my girlfriend has been having which doesnt happen on any on