Unocoin will collect your personal information for opening an account and also for your transactions.

If you were unable to upload the documents required, 

The total size of the documents you are trying to upload may be more. Please reduce the size of your each document to 100KB. 

Clear the browser cookies and cache and try to upload it again. 

Maybe you have already registered/verified with an identical KYC.

If you are still facing the issue kindly write us at support@unocoin.com  with the error screenshot.