Activating Exploration Nodes?

I'm having this problem. I'm new to this game and also all the systems, I might have understood a few basics or so, but this one still the problem that I cannot solve, after a week of playing.
Activating Exploration Nodes. Yes.

In order to do "Trade" activity, we ought to connect nodes from every node manager, I think I'm aware of this one, done this too.
From watching the youtube videos and such, from what I gained, the yellow lines there are exists when the nodes are connected, correct? That's my node connections, by the way, as far as the ones around Velia up to Heidel only. No more than from the picture I've shown.


So I've come up with this one, when I tried to trade, there will be something like this, "Exploration Node must be activated".
Here will be the pic.


Okay so, how do I activate exploration node? Did I misstep something that makes me unable to do trades? I am currently Lv.50 if lv is actually the factors.
Isn't trading is just as simple as buying the goods off the merchant - Traveling with the goods whether with foot, mount or private wagon - Sell the said goods to the destination trading merchant?

Please if anyone could elaborate me with this, trading/commercing is a system that I always love in every game that has it. But this game is the first that makes me confused about the system. Thanks.

 

Your nodes look good. Trading is disabled currently.

 

Is trading still disabled?

 

I saw someone carrying the trading bag, which is used for strength leveling. How can I also get that? thanks!

 

Trade is still not yet implemented. You can craft a trade pack with your workers through workshops. wood workbench for example.

 

Thank you!!