MATLAB: Random appearance of error code 400

error code 400ThingSpeak

Error code 400 randomly occurs. Sometimes for long periods the acquisition on two channels works fine, sometimes no. The last case occurred on April 30, 2020 at 20:50:20 GMT+2 and continuing while I am writing (May 1st 07:40 GMT+2). All times this occurred I checked my Wi-Fi router and no problem was found. The acquisition interval for both channels is 120 s.
I suspect that for some reasons your server stops working and the problem is not in my software. Thank you.
P.S.
At 7:47:41 GMT+2, May 1st the acquisition started again without any action done.

Best Answer

Thank you for your kind response. Give me, please, instructions as to track the exact request my code is making. At present, the unique thing I can track is the error code of unsuccessful connection (400). Many thanks
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