How to delete thunderbolt cloud disk due to insufficient space?

Everything downloaded from the thunderbolt cloud disk will be stored in the cloud disk. During this period, even if you delete it, you will still be in the recycle bin 10- 15 days, and the files in the recycle bin will still occupy your cloud disk storage space. At this time, there is not enough space in the cloud disk, and there is nothing you can do. You can only wait 10- 15 days, and then your space will be returned.

I have two QQ and WeChat accounts, so I have four Thunder accounts, which are 2T-4T spaces. I'll use another one when one is full, and I'll use it when the system automatically deletes it.