Let me know how you go with the latest update. It should resolve all pending issues.
I recommend the following steps if you are still having issues:
1. Unload Skinner
2. Delete the Data/Skinner/PlayerUsageData.json and the Data/Skinner/DefaultCraftSkins.json
3. Check your config and use the following settings:
"Skin Import Settings": {
"Dev Mode - unlocks all skins": false,
"Cache player skins (Better for performance, requires relogging to update skins list": false,
"Auto Remove DLC and Paid Skins from Imports": true,
"Allow Owned Skins": true,
"Allow Skin sharing for teams": false
},
4. Load the skinner plugin