Now since it's synced properly all staked coins are generated but not accepted.
I have the same problem. Tried resyncing a few times already, always end up with a bunch of unconfirmed staked coins. Basically anything after 27/8 is unconfirmed

Yes anything after 27/08 unconfirmed aswell
There is obviously a problem at 27 August. It has all the appearances of a fork, which a lot of users are on (both sides)
I have used the .conf information from the OP twice, so I would suggest there is something wrong in that.
I suggest that the developer immediately check the nodes and .conf information, as well as all the wallet download locations, before too many users wind up on the wrong fork.