Hi guys, I'm quite a newbie, but I have a little problem: after mining monero with my CPU, this is the first altcoin I'm mining.
Of course I won't be rich of money (I'm almost at 100 DMX and I'm already happy), but I want to be (at least) rich of knownledge...

If you check my wallet ( https://chainz.cryptoid.info/dmx/address.dws?DGBJeybgh7o1NJtL74oKQk3aip52m6dT4r.htm ) you will see that it was able to stake until 2017-09-16 13:28:55.
Since there it doesn't stake anymore.

While I was able to stake, I didn't have any c:\users\\appdata\roaming\darkmatter\darkmatter.conf file configured (file didn't exist).

Then I stopped staking (and I don't know why)...
So I created darkmatter.conf file, by copying the above one:

 rpcuser=rpc_dmxuser
 rpcpassword=******************
 rpcallowip=127.0.0.1
 rpcport=33125
 listen=1
 daemon=1
 server=1
 addnode=101.98.48.226
 ...
 ...
 ...

But I have some question:

- is "rpcuser" and "rpcpassword" values that I can freely write or have I to register them somewhere before? (if yes where?)

- both before and after adding conf file with all "addnodes" keys, in my wallet I can always see 3 or 4 active connections to darkmatter network: is it normal? (with other wallets i.e. DeepOnion I see a lot of connections without any conf file)

- I can see that my staking weight is 80 and network weight is almost 8millions... is this the cause because I don't stake anymore?

Can I do something else to stake again?

I tried to search answers to my questions, but these ones are without responses.
Thanks to who will help me.