Sometimes an improper shut down may result in your coins.json file being corrupted. If you load AtomicDEX and see no coins available, follow the steps below:
Click on settings in the lower part of the sidebar.
Generaltab, on the line for Reset wallet configuration, click on the
Click confirm to reset your configuration.
This will restart the app.
When you log in again, the default coins should be enabled and visible. To activate other coins, refer to the AtomicDEX Desktop coin activation guide