Hi Dmitriy
I’m quite sure I’m using auth tokens generated from my local server. I validated it by logging in as Admin on my local Blynk server and ensured both tokens were correctly copied across to the app. I assume the Blynk app would say “WeMos” or “MEGA” offline if there was no communication.
Take out the delay (500)
use simpletimer
like to report I have WeMos talking to MEGA using Bridge and a local Blynk Server. Very powerful feature once you get it going !
It was pretty easy in the end but a little tricky to get going - could do with more examples and documentation 
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