Disabled by Administrator: Cannot Use Application
If you are an end user experiencing this problem, you will need to reach out to your Box Administrator referenced in the error message.
Link to full Article on Box's website - https://support.box.com/hc/en-us/articles/360044195053-Disabled-by-Administrator-Cannot-Use-Application
Box for FTP - 530 - Application Blocked by Administrator
In order to use Box for FTP, your Box admin will need to enable FTP in the Admin Console. The steps to do so can be found here.
Link to full Article on Box's website - https://support.box.com/hc/en-us/articles/360044192673-Box-for-FTP-530-Application-Blocked-by-Administrator