Glen,

The nationwide filing extension until May 17th only applies to individual taxpayers, it would not apply to business tax return filers.

https://www.irs.gov/newsroom/tax-day-for-individuals-extended-to-may-17-treasury-irs-extend-filing-a...

Business and individual taxpayers in Texas that were impacted by the winter storms do have an extension until June 15th.  But Proseries is unable to update the software for these scenarios.  

https://www.irs.gov/newsroom/victims-of-texas-winter-storms-get-deadline-extensions-and-other-tax-re...