i transfered my coins to my wallet 3 weeks ago (16. feb) and aint got any stakereward yet...is this related to the same problem?
or would i simply need more coins for staking? (got around 450xcpo)
Staking is basically a lottery system. The more coins you have the more likely you will "win the lottery" to get a stake reward of 3. You must not only keep the coins in the wallet but must also have the wallet running and open for staking to receive a stake reward. Also a node is 50000 xcpo, which receives rewards every few hours, so 450 would expect rewards on the order of weekly.