On coinsmarkets I created a GCN wallet. Their site went down so I went to a different exchange to buy more GCN.

 Coinsmarkets came back up so I transferred all coins from the other exchange to them.

Now I’m back on coinsmarkets and it says - “create a wallet”?!?! So the wallet I created before no longer exists and I have to create a new one.

Does that mean I just lost my coins? How do I even track GCN coins and transfers?