The FTP/SFTP feature is a business feature. It is included in any business plan. The lowest plan is “Business Basic Plan with 3 users”, which includes 15GB storage space and 4 accounts (1 main + 3 sub-accounts) for $144/year.
Please note the Business Basic plans include a lot of business features, incl. WebDAV Drive Mapping (Cloud File Server), DriveHQ FileManager, Online Backup, Sharing and Collaboration, etc.
>>> Which is the cheapest plan without this limit?
We offer 25% discount to non-profit organizations. For more info, please contact DriveHQ customer support via email.
>>> We can upgrade without changing our account username password?
Yes.
>>> We use drivehq only for a reasearch testing, university will close tests in next 6 moths
You can order a monthly service plan, which you can cancel online at any time.