1. Maybe the seed is expired, the seed is a certain period (but the natural time limit is still very long), maybe the doer forgot to replenish the seed, resulting in the seed of the "natural death".

2. You may have installed some software on your computer in the past few days that conflicts with Thunderbolt, or you may not have installed Thunderbolt in the past few days, try reinstalling it or changing the version.

3. If you double-click to open the seed, try dragging and dropping the seed to Xunlei to download it.

If it's not one of the above three reasons, then I don't know what's going on!