Hi Tony, I highly advise jumping to 17 versus going to 16. Seventeen is just as stable and much easier to use. That said it appears your maintenance coverage expired in 2015 (I could be wrong on that), so while you can 'evaluate' the latest and greatest for 30 days, we'd need to bring you current on maintenance/purchase a new license. Here's the link for the v17 evaluation version. Ping me back and I can have support/sales get back to you as appropriate.
https://www.pitneybowes.com/us/mipro-free-trial.html