I cant see in admin panel ,if there is a possibility to set the limit of download transfer.
Guest - can download 1GB or 2 files
Free user - can download 5GB daily
Premium User - can download 20 GB daily or no limit??
Really good, we're working on it right now. It's still some time away though since we're looking at also rewriting the template to use React (so it'll be lightning fast!), but we'll be blogging about it soon.
V5 is a refactor of the core script and framework, so it's taking a bit longer than I'd initially hoped. That said, the core refactoring work is done, new plugin architecture is also done along with better application routing (nicer urls!). Separation of business logic from the views is done (you can also now override pretty much anything in the script via your own themes). DB ORM and Twig template integration work is done.
Still some work to do on the admin area migration then plugins migration, so hopefully we'll have a beta soon(ish)... Anyone that's purchased the script will have access to the beta.