Old library version… upgrade to v0.5.1
Make sure your App is foremost on your phone… as soon as you put the App into the background or the screen blanks, you will get this…
Its working fine after a while 
The notifications widget is not working though. Does it work with the bluetooth?
Nope 
it is another “Needs link to server widget”… basically no widgets that would connect to an outside device via indirect link (Webhook, Notifications, Twitter, Email, Bridge… possibly a few others?? I don’t use BT much 
Thanks a lot for your help
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Would the virtual pins work?
Not sure about Blynk.sync() features, but otherwise normal use works fine
Guys, thanks for the report, will be fixed in a new release.
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