this coin should be PoS only, why does it allow PoW too?

What do you mean it allows PoW?
Open debug menu, type "setgenerate true", then sit back and wait a few minutes. you'll see.
Looks like you can still mine transaction fees.
no its real blocks, but every block is only worth 0.0001
i already have 2.226k blocks

so yea, mining PoW isnt worth it, but helps transaction speedup.
the only problem is, with PoS i have majority of block generation and therefore can do a 51% attack... sad
I am still not even sure if PoS is working. Transactions are pretty fast though, almost instant.