I need fast help :)

Hello


Me and my friends started making our own server classic one.
We have some problems if you know some of the solution of these problems please respond to the topic thank you . :)


Problems :

1.Market shops are not on market how can we add them?

2.When you try to upgrade the level of backsword in Twin City of 25 lvl the backsword disappears, but when you fill up your inventory there is one free place that can not be filled.


Thank you for your time :)

You should probably learn to code private server yourself instead of just using some random source from here when you have no idea how it works.

1:
Look at existing sources that have it coded, but really. Learn to program yourself.

2:
Check that the correct item packet is send back to the client.