I doubt there is any way the team can delete items from your phone. (and I don’t remember any sort of expiration date for files that are downloaded) Do you have any sort of app set up that will automatically delete files if your available memory reaches a critical level? This could be a ‘feature’ of the phone as well.
It’s the same issue posted twice by one user. I know one other user commented in the first thread that it had happened to them as well, but I can’t find mention of it happening to anyone else—hopefully someone will speak up if so. I’ve tried replicating it on a couple of devices and haven’t had any luck yet.
If the WiFi was off , it may have needed that to verify the downloaded file and may explain why it didn’t show, but to actually free up space in the storage wouldn’t be explained by that. Using a redmi phone, the cleaner will give the option to free up space by deleting large files, so might be a feature of the phone or an app, like anti virus, that removes them too.
Edit to add, could you detail what device you’re using ? IE laptop, windows 10, dell or iPhone 13, iOS 15.4 etc
Honestly,. I work tech support for a mobile phone provider in the UK, I may be able to offer a good bit of help. DM me if you want or can carry on thru this thread. Would you be able to test on another device? See if an issue like this reoccurs, it’s to see if it’s device related or account related, so helps find the source of the problem.