Hi,
I am really sorry for the inconveniences, but you possibly missed WCfM Capability settings.
When you are using WCfM dashboard then please use that to set vendor capabilities.
Before I am going to solutions, I just want to mention. All these are related to WCfM Ultimate so this is not the right place for discussing over premium plugins.
It will be great if you reach us directly – https://wclovers.com/forums/
1. For having only Downloadable product in product manager just keep enabled “Simple” and “Downloadable” product types at WCfM Capability setting.
2. Disable Stock from WCfM capability setting. You still have WCfM product dashboard screen manager to control which you will make available to your vendors.
3. Triple slash possibly our translation mistake, will fix that. But you are allowed to edit that label under WCfM Admin Setting -> Vendor Verification tab
4. At the add new product page, there is a margin at the Short Product description for no reason….. – not getting this very clearly.
Thank You