I am using free account on thingspeak. Recently I have noticed that on Account tab there is "expiration date".
Does it mean that my account will be deleted after this date?
Or maybe after this date counter of free messages (for free account there is 3 000 000 limit of messages) will reset?
For a user with a free account the expiration date is the date when your free allocation of messages per year expires. An allocation of messages will be added to your account on or a few days before your anniversary date. The anniversary date is the date you signed up for Thingspeak or December 5th, 2016, whichever is later. So, as long as you are using less than the allocated number of messages for a free user you should see no interruptions in service. If you exceed the number of messages for a free user's quota per year, your channels will no longer accept messages until more capacity is purchased, or until your anniversary date when a new quota of messages is allocated to you.
More details are in the "license FAQ" linked off this page: https://thingspeak.com/prices
So the fact that now there is a message above all my channels saying:
"Your term will expire on December 4, 2017."
Is only a warning, and will disappear after the 5th of December without any data loss?
Before the expiration date/anniversary date of a free user account, a new unit of messages available to free users (3 million messages/year as of Oct 2017) will be added to your account with a new expiration date for the new unit of messages. As long as you are using less than the allocated unit of messages/year for a free user there should be no interruption.
Note that using more than the allocated quota of free messages per year can result in new data not being accepted. ThingSpeak will warn you about this as well on your channels' page. Ignoring that warning will likely result in any new data not being accepted. The best way to see if your usage rate will result in exhaustion of messages before the expiry date is to look at the "Monthly Usage Rate" chart on the "My Account" page. If your estimated monthly usage is high, the bars showing projected messages remaining will end before the expiration date of your unit.
Please read the license FAQ for more information about quotas and storage policy for data sent to ThingSpeak.
Your channel seems to have good deal of data in there today, Nov 10. Were you able to make new posts recently? Are you still having trouble with your account?
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