Learning creating PoS coin, but network weight always 0

Hi,

I'm learning creating (well, cloning) a PoW/PoS coin for learning, but the network weight is always 0.

I've done with:
- Generating MerkleRoot
- Generating GenesisBlock
- Set stake checkpoint in kernel.cpp to 0
- Set checkpoint in checkpoint.cpp to 0
- Make own seeds

I've tried to do mining on a PC and several VM and it works nicely. I'm able to mining blocks as it should on several wallets.

Here are the scenario:
Script: X11 PoS/PoW Hybrid
Max Coin suppy: 10.000.000
Already mined: 1.000.000 (spread in 5 wallets)
Max PoW block: 100 blocks
Mature after: 5
Confirmations: 5

Min Stake Age: 5 minutes
Max Stake Age: 30 days
Stake Reward: 100% per year

All of my wallets has matured coin and show "Staking" indicator.
Each wallet shows "My Weight = xxx" but the problem is "Network Weight = 0".

When the PoW blocks ended, the Network Weight is still at 0 even after several hours wallets online and all connected to main node.

With this problem, network is not generating new blocks since the PoS minting is not working at all.

What am I missing?
How to make the Network Weight generating and start the PoS blockchain prosess?