You should check again if the target phone has an internet connection. The app uses an internet connection to send recorded data to the server. If the app cannot send data to the server due to no internet connection, it will save recorded data to temporary files on the target phone and wait to send them again when internet connection is available. Therefore, if your target phone has internet connection only in some periods a day, sometimes you may feel new data updated slowly or lost.
Please visit the troubleshooting session we discussed most cases you can see no data logs.