Hi there,
Exchange traded means that it must be listed in one of the exchanges (that StocksCafe supports).
ETFs are listed and traded on exchanges hence StocksCafe have data on them and hence able to be shown in StocksCafe.
For non-exchange traded instruments like this fund, the best you can do is use the Other Assets feature to manually track it → https://stocks.cafe/personal/assets
Cheers,
Evan