No! I’m kidding, kind of.
I believe SSREF is an OTC Markets ticker. OTC Markets instruments aren’t currently supported by Freetrade’s US listing partner, so they can’t currently be added.
Don’t despair, though! There is a German listing (DB:SR9A) for the company and the European expansion is coming to Freetrade at some point. Soon-ish, I hope.
For now, I politely request you to search before posting, as there’s already a request for the company here. It’s technically a different ticker and they should be distinct. However, I’ll ask this to be merged with that as I feel the Swiss listing is likely to be available more quickly than the OTC Markets listing.