Sort:  

It works a bit like HBD in savings. SPK tokens are allocated every 28800 blocks (approx 24 hours) starting from the moment you delegated.

Yes, but it is now >48h ago.

You're right. I saw talks about it in the operator chat room. Looks like It's only triggered when transactions that affect the balance occurs... basically the same as HBD...
As soon as I get more accurate information, I will forward them to you.

It's been fixed. You should see your earned SPK from now