@alahsan yeap. So What message do you get when you try to login?
Hi. My device is active. I tested Blynk is not receiving:
This output is stale (several weeks old). My Android app says: âyour Particle Photon is not in Networkâ I remember I got this for days when I first created this project and it eventually went away. Iâve rebooted everythingâŚdo I just wait?
Hi, I had here in Switzerland also a blackout of the blynk access in cloud.
Yesterday 25th of may no access from about 
to this morning 
. Tats were deleted and are restarting this morning from scratch. No access to the blynk forum either yesterday. I will still use blynk as a monitoring device and a backup for activating and deactivating heaters and power devices until solution works stable. Keep following stability, but since we are now paying fees this is a major concern!
Thanks
its working now ! i reinstalled the app !
Thnx for the Follow up !
Still battling with Blynk but have narrowed it down. When I access the data online ie http://blynk-cloud.com:8080/xxxxxxxxxxxxxxx/pin/V11 I get the correct data that I am expecting. However I have had no luck connecting the app on Android. I have even uninstalled it and reinstalled it and still cannot get my data - I just get a message each time to say that the Arduino is not connected in the network.
When I uninstalled and then reinstalled the app, it never asked me for my login details again - I assume they were stored somewhere on the phone - does anyone know how I can clear this data so that it asked me to log in again once I reinstall?
Thanks
I ended up having to recover my password (which last night 5/25/16) wasnât working. Got an email from Blynk support this morning is was, recovered my password (created a new one) and that worked for me.
What does your hardware says?
Strange thing is that all my hardware is connected - I can access all pins via the web. It is the app that is not connecting to the cloud.
I think I have got it right but it is most annoying - hopefully this will help someone else:
I went into the app settings and regenerated the auth token - I then used this new auth token and reflashed the particle photon microcontroller. This worked perfectly and I could now again connect to it via the app.
Once this worked I then tried the same on my Arduino Uno - generated new token, uploaded to board - and it is also working with the app.
Now I only have two more photons to go.
I have no idea what originally went wrong or why this is working but it is frustrating to have to reflash all devices.
I refreshed token on my particle electron and it still doesnât work. Says not in network. Plus it cost me 1,000 energy points because I have remote users and after I refresh token I have to get another remote link 
Donât worry. We will restore your energy. Could please check serial output of your particle? Are you sure you are using latest available Blynk library?
I am not home at the moment. but I flashed the newest blynk library last night. I just verified right now via particles web build platform that the blynk library is version 3.5 I can not see serial until later today. How do I see serial data? Do I need to send a command to view the data you are looking for?
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Using version 0.3.2. Updating to 0.3.7. After update, all works well.
Updated 0.3.2 to 0.3.7 all works well thanks.
I am having similar problems staying connected. When everything works it is great but sometimes the connection lasts for hours and sometimes minutes. Here is an example of the problem;
/ _ )/ /_ _____ / /__
/ _ / / // / _ / '/
///_, /////_
/__/ v0.4.4 on Arduino
[8447] Connecting to blynk-cloud.com:8442
[8541] Ready (ping: 3ms).
[64811] Connecting to blynk-cloud.com:8442
[73915] Connecting to blynk-cloud.com:8442
[74025] Ready (ping: 0ms).
[97705] Login timeout
[97708] Connecting to blynk-cloud.com:8442
[97752] Ready (ping: 0ms).
[114778] Connecting to blynk-cloud.com:8442
Any hints or thoughts would be appreciated.
@temory
This is an old (and solved) thread.
Not to mention unrelated to your issue, as you are clearly connecting to a functioning Cloud Server, if only for a period of time.
Please open a new topic with appropriate title.
I have the same problem now.
if I log into my account my application list is empty!?
When I connect using Facebook
Is there a problem with the Blynk server?
Like gunner mentioned above, this topic is old. You should open a new one for your problem