[NoFile]

"not active or paused - skipping speed" is sent from the upload speed and estimated time measurement function and won't affect your upload.

The warning message that you receive when trying to close the page is only there to prevent accidental exits and in case you're in the middle of an upload or if you haven't copied the URLs of the uploaded files.

Unfortunately browsers no longer allow you to change the warning message, hence why it's telling you to save.