How can I check or increase my cloud storage capacity?

Select [Files] at left on the home screen and check the usage information in the lower left of the file management screen. Managing files

Cloud storage is shared by a variety of Creators' Cloud services, so uploading or saving videos to other apps or services will also lower your remaining capacity.
And because videos exported by Master Cut (Beta) after correction are also stored in the cloud, the remaining space is reduced by an amount corresponding to that file size.

Additional storage space can be purchased from the page with your Creators' Cloud storage subscription and usage.
After signing in, select [Storage] from (Menu) in the upper right, or go to the Creators' Cloud Web page with your current storage subscription and usage, and then subscribe to the storage plan.

All files can be deleted on the file management screen by selecting [Files] at left on the home screen. Managing files