First of all, we confirm that you could export your project created in Movavi Video Editor or Movavi Video Editor Plus if you purchase Movavi Video Suite as the latter includes Movavi Video Editor Plus as editing module.
In order to export your project in Movavi Video Suite, please launch the program and open Edit video module. Then, please go to Files - Open Project and find your project on the computer.
Please note that by default projects of Movavi Video Editor are stored in C:\Users\<User's account>\Videos\Movavi product name\Projects
As for projects of Movavi Video Suite, they are saved in C:\Users\<User's account>\Videos\Movavi Video Suite\Projects by default.
If the issue with your project still arises, please contact us so that we could investigate the issue further.