help needed with notofications not coming through

 
 
I'm working with MT4 for 5 years now, and I have had notifications active for years too. I used to received them although I didn't use it much.
Now I do want to use it for a specific alert, but the notification does not arrive on my mobile.
I have checked and double checked the ID.
I have checked and double checked the settings in the Notifications tab under tools.
I have checked and double checked whether my pc has internet connection, it does data is coming in MT4.
I have checked and double checked whether my mobile has Wifi, and it has I can browse the internet.
I have send a test notification which worked previously.
The test notification is queued (see below)
Can someone tell me what might be the cause of not receiving the notification, and what to do about it?