Masternode is the key. If you don't have enough coins for a masternode, i suggest you to start staking ( also if low reward with low amount of coins). But absolutely don't join shared masternodes services, as SPD has a lot of potential, and as soon as the price makes 5-10x they all will disappear with your coins.
The best choice, would be to buy more coins to get atleast 1 masternode.
There are abundant scammers around us, hence investors should be careful with offers to help for free.
Especially when someone's offer pop up in your computer screen, without your ask for help.
Very careful with those guys!