I tried adding data with the Line Protocol (via “Upload Line Protocol” then the “Enter manually” tab) and I do get the message “Data Written Successfully Hooray!”, however, no data is visible. When I use the CLI with the INSERT command, it works without any issues. I also have the same problem with the API which returns a status code 204 but the data is not visible either. There seems to be a bug somewhere, perhaps related to my free trial account?
Here are my test data: