The license expires inexplicably

(Using google translation)

I purchased the license of SDL Trados Studio 2021 Freelance on May 27 and used it for a few days.

But when I opened Trados today, it prompted that the product was not activated. However, the license on the SDL account page is in the "In use" state.

So I cannot use Trados now. I think this should be a BUG. Please help me to solve this problem.