A common tactic among disreputable generators is the "file locker" loop. You paste the Filedot link, and the site generates a link. When you click it, you are taken to another page that requires you to sign up for a survey, an offer, or a subscription before you can get the actual file. The generator never intended to give you the file for free; they wanted your lead generation data.
: There may be a maximum limit for individual files, often around 10 GB. Link Expiration filedot premium link generator work
Even premium accounts have fair-use limits. A typical FileDot premium account allows 200-500 GB per month. A popular generator with 1,000 daily users will exhaust that limit in hours. Once the cap is reached, the generator stops working for everyone. Report: Technical Overview of FileDot Premium Link Generator