Principle Version 5.15 Issues

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Principle Version: 5.15
macOS Version: 10.15.7
Description of what you need help with:
I use to use Principle version 5.15 until yesterday. Today I try to open a prototype and it didnt work, I got a pop up instead, saying “download the newest version” or renew key license", I have unistall Principle, then I tried to install again (version 5.15), but I can’t do it.
Steps to reproduce the behavior:

  1. Install Principle 5.15
  2. Open aplication
    3.appears a pop up saying “Principle quit unexpectedly”

.prd file link (we really need this to fix almost any problem):

you’re probably trying to open a file that was created in a newer version of principle, OR was corrupted somehow. if you’re able to open other files, then the issue is with that specific file.