Being scammed is never a fun thing, and it has happened to many people. This is why I have built a really simple system that allows for easy trade. On Darkryie's island (/visit Darkryie) I built a safe trading booth that uses very simple redstone. If you ever need a safe trade solution you can head over there. But there should be a public area for safe trade like what skybase was before. Before you reply with support or no support please visit his island and check out the system really quick. Thanks

 

I could not find it at that island.

 

Just put a screenshot

 

This is what it looks like from one side

 

Thank you.

I think it is pretty safe, but still has it's flaws

 

Yep