yjpc.cloud hosts private, single-user tooling operated by its owner. The applications registered under this domain (including the Google OAuth application used to copy the owner's own backups to the owner's own Google Drive) are used only by the owner.
No visitor data is collected on this page. No third party's personal data is collected, stored, sold, or shared by these applications. Google account data accessed through them is limited to the owner's own account and is used solely to store the owner's backup files.
Questions: use the support e-mail shown on the consent screen.