For any inquiry about PROV Validator, Translator, Expander and ProvToolbox, please contact:

Professor Luc Moreau
Faculty of Science, Engineering and Medicine
University of Sussex
or
report issues on github
https://github.com/lucmoreau/ProvToolbox
When reporting an issue about ProvToolbox provconvert, please provide the information returned by the command provconvert --version.
When reporting an issue about this service, please provide the information returned by /provapi/configuration.