From what Blynk staff have said in recent replies to similar questions, it seems that if you have an old free account then it will be limited to the old number of devices, datastreams, templates etc.
Users are being advised that if they want to take advantage of the new free features then they6 will need to create a new free account.
Obviously that’s not a simple solution, as there’s no way to migrate templates and their associated datastreams, devices, dashboards etc from one account to another.
You should also be aware that the new free account has a limit of 30,000 (that number may change) server transactions per month for the entire organisation. This means that if you want to send data to Blynk once every 10 seconds on one datastream then you’ll be sending 8,640 data points per day. You’ll hit your limit monthly limit in three and a half days.
If you have multiple devices sending data on multiple datastreams then you’ll obviously hit that limit much faster…
As I said in this topic, the free plan is now useless for most practical applications, and Blynk doesn’t have an affordable paid alternative any longer…
Pete.