The error "unsatisfiable dependencies" on Deepin 25 indicates that the application you're trying to install requires other software packages that are either missing, have version conflicts, or are not available in your configured repositories. To solve this, you can try updating your system's package list and upgrading all existing packages by running sudo apt update && sudo apt upgrade in the terminal. If the problem persists, you may need to manually install the missing dependencies paybyplatema com using sudo apt install [package-name] or add additional repositories that contain the required packages. Be cautious when adding external repositories, as it can sometimes introduce instability.