Hi Ruben, thanks for asking!
We don’t support PDF, it’s on the todo list but for now you can make use of the CSV, TSV, XLS, XLSX, etc. export formats (XLSX is the cleanest) and use the “Send as E-mail” Export Method within Scheduled Exports to send the report to your recipients.
Regarding your query of (Yith) multivendor, I can see that Plugin isn’t on our supported Plugins list. You’ll need to open a new support ticket via the Support page and attach the latest release of that Plugin so we can get that baked into the next Plugin update 🙂