Don't spam the refresh button, as some sites will temporarily block your IP for "bot-like" behavior. Give it a solid 10–15 minutes between attempts. Check for Mirrors:
If you can provide more context (which program, OS, or website), I can give more specific guidance. Don't spam the refresh button, as some sites
: Services like Real-Debrid or AllDebrid act as a "middleman." You pay a very small fee to them, and they provide you with a high-speed "Premium" link for sites like Mountfile without you needing a full subscription to the file host itself. : Services like Real-Debrid or AllDebrid act as a "middleman
System prompt for automated retry "Mountfile: exclusive slow-download slots unavailable. Retry scheduled in 30s." : Sometimes the "slot in use" status is
: As suggested by the message, trying again later might yield success if one of the slots becomes available.
: Sometimes the "slot in use" status is cached in your browser. Clearing your cookies or using an Incognito/Private window may reset the session.