Excel conversion results in pdf could not be converted due to internal security

[Kavila Kwinga 0]

I am trying to do a pdf file to excel conversion. The file has a password and once I have opened it I am trying to convert it. However once start the process it fails with the error "The pdf file could not be converted due to internal security preventing content extraction". The problem is if I try this on Wondershare PDF Element it converts it just fine with no errors. Is this a known problem with the Nitro application ?  For the file I am trying to convert all the security settings actually show as allowed.