Hi,
Thanks for purchasing the Events Calendar Pro. I can help you out with this. See my answer below your question:
Is there a way to edit a saved venue in order to correct mistakes or add additional information, such as an address or phone number?
Yes you can individually edit any Event, Venue, or Organizer.
Do you see the Venue List Here:
Events > Venues
And can you click on Venues and find the Venue and Edit it like any other WordPress Post?
Let me know if you are not seeing that and we can do some troubleshooting to show this.
Thanks
Note- Moved the Topic to the Pro Forum as you are a Pro License Holder so you can just post in this forum all your questions or issues.