Good morning,
If you use FSrealWX as a weather engine, you must deactivate the weather settings of other weather programs, otherwise the weather data will overlap.
FSrealWX has no influence on changed cloud textures. FSrealWX works with standard clouds from the flight simulator.
If you find an error, then please give me exactly about your system. Which sim (FSX / P3D / Xplane). Which connection (FSUIPC / SimConnect / FSrealWX-Bridge). Which OS.