Hello blynkers.
I have a local server to monitore the temperature of my house. When the temperature is higher than 30°C then push notification. This used to work by 1 month, but stopped. I don’t change nothing in the server. Could you guys help me? 
The email works fine, but notification not
Please don’t tag on to the end of a 2 year old topic about SMS notifications.
I’ve moved your post to a new topic.
I assume that your local server is connected to the internet?
If you’re using iOS then read this:
Pete.
I’m using android. I tried on my two smartphones (moto g4 plus and xiaomi mi 8) but does not works 
I configure my router to portfowarding, so I can visualize the data out of my home, is this a problem?
No, it’s just that in this thread:
the user didn’t mention that his local server wasn’t connected to the internet, which is necessary for push notifications to work, as they use a google messaging service.
Pete.
I see. My server is in the internet, the mail widget works, and the push notification used to work, but one day just stopped. I saw the logs, the HD storage, internet (tried to change network), stop the server and run again, reinstall the app, but nothing worked
In blynk server is working the notifications, so I think that is my server