I have 100 coins that are 4 weeks old and I haven't had a single stake yet. Wallet is open 24/7.
Same here...
Can a dev chime in on this issue? Or anyone who has any info?
+1, nearly 50 coins here, some are 3 weeks old, currently no stake, no interest. :/
If your wallet is unlocked, then you're just unlucky. It also depends on the tx size. since the stake occurs not for individual coins, but coins in a transaction, if you have a lot of very small transactions, they might not stake. This is to avoid further pollution of the blockchain. Workaround for this is to send your balance to yourself
- the wallet must be unlocked
- the wallet must be open
- the coins must be greater than 7 days old
in order for coins to be staked? For the benefit of others, can some confirmation be given on just how to unlock wallets for the latest (5.0) wallet? Because it has been said previously that you just need to leave the wallet open, yet other POS coins say you need to leave the wallet open AND unlocked.. There isn't any clear definition for CACHe, which I think is leading to so many of our problems.
For any type of coin, your wallet HAS to be unlocked to stake. If you have it locked, it's like trying to add money to a safe that is locked
pretty sure it's impossible. Unlocked, means not encrypted, of if encrypted then.. well... unlocked 
[settings -> unlock wallet] 
., 