Different brokers may use different symbols for some instruments. Check if your broker's symbols differ from ProQuant's.
If that is the case you have to manually edit the PQ-bridge file.
Go to line 25 where you will find the configuration that matches ProQuant's symbols to broker's symbols.
If you have any issues activating ProQuant bridge please contact us at firstname.lastname@example.org. We will be happy to answer your questions.