I think you should not make the coin completely free of charge. Or leave the limit on the number of users when the fee is not charged. It's good marketing) In the end, you should receive money for their work. It is better to pay for stable performance of the pool than to after some time problems due to the fact that the owner would be that interested

Okay. Finally got the wallet to sync

• 1. backup your address somewhere safe
• 2. close wallet
• 3. go to the "C:\Users\UserName\AppData\Roaming" (replace C with your windows drive location, and UserName with your user or simply click your way there
• 4. in the "Roaming" folder find the Signatum folder and delete it (before that do step 1. and 2.
• 5. run your wallet (it will be empty but this will trigger the "Signatum" folder to show in the "Roming" folder
• 6. close the wallet again
• 7. in the "Signatum" folder replace the wallet.dat with your backed up wallet (just in case it has to be named "wallet.dat")
• 8. go to this web page https://github.com/signatumd/releases/blob/master/signatum.conf and copy all the "addnode=104.197.159.83" (just them)
• 9. open Notepad (i would suggest Notepad++) copy the nodes in it and save the file in  "C:\Users\UserName\AppData\Roaming"\Signatum" as "signatum.conf"
• 10. start your wallet and wait a bit

I hope this helps someone. 
Oh and a note this is for "Windows" users, I'm not sure if it will work on "Linux"

So if anyone is willing to donate 
I will really appreciate any coin given
The address is in the signature