Filter logs by date.
If you're having issues exporting your logs, and you're exporting 2000+ in one go, it usually means that the alotted space on your phone for our app is too small to save that data. When this happens, you need to batch it, and move the file from the Labyrinthos folder to another location. Filtering logs by date will help you do that a bit easier.
Earlier announcement: Log limits are now implemented because of increasing costs. Exports will ensure you don't lose readings.