WD readyview app stops popup alerts on iOS

Since last night, the app has not popped up any alert/notification on my iphone. It has been working since I started using this iphone until yesterday. There was no system change yesterday. I checked all settings and notification is allowed for readyview app. And firmware is also the latest. The alerts still work on any android phones. Please advise if there is any solution. thanks.

Hello,

Please refer to the following KBA article : WD ReadyView Online User Guide