I'm having trouble because I can't use trial ver

Hello.
Question about the trial.
I’m using the trial version of Audirvana, and I updated my MacBook, so I decided to use the trial version on the new MacBook, so I downloaded it.
It’s about a week since I installed the software for the first time, so it’s within the period.
However, I had a problem with the audio and reinstalled it.
When I try to start it after reinstalling it, the message “Please purchase a license” is displayed and the trial version cannot be used.
After that, the same popup was displayed no matter how many times I tried again.
I was very troubled because I was planning to purchase it after the trial version was over.
I’m Japanese, so I’m sorry for my poor English.