Breathe green in particle photon

my particle photon board, recently after connect to wifi and breathe Cyan, start breathe green.

what do I do?

Your code is most likely blocking the cloud connection.
Place your device in Safe mode, and flash either ‘tinker’ or ‘blink an LED’. If that runs successfully, it’s your code. Try taking blocking loops/delays out.

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tnx for answer,
Place your device in Safe mode , How??

You can go to the docs and use the search function in order to find a link like this

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