Chiroubles

I bought, last week, Sky Max Pro v4.0.1 for XPlane 11. The installation took place with no problem at all but the result is not what is expected. For exemple, if i set the weather parameters to "broken cumulus - 2500-5000 ft" I got few clouds over 5500 ft. If I change "broken" to "overcast" same kind of problem : fewer clouds than expected, cloud layer too high. If I disable Sky Max Pro without changing any other parameter the clouds generated by Xplane 11 are correct (density, altitude ). My configuration CPU : Intel I7-3770 3.4 GHz Memory : 32 Go Video Card : Asus STRIX-GTX1070 8 Go OS : Windows 10 Pro Xplane 11 - No other plug-in What's wrong