Some pictures of the setup you can give us?

What kind of pictures do you like? There's not much I can send. I simply have a modem-router in one distant room of my house and I was hoping the mini TP-Link router near to our living area would serve to enhance the signal. The problem is that this mini router connects and disconnects failing to establish a useful internet connection at all.

For example Status and signal level (AP List) from main wireless

I have had a technician check my connections. We identified that I selected the wrong channel that apparently is not recognised by most electronic gadgets in my country. The suggestion of the channel number was prompted during the set up process!!! Changing that and tweaking some other settings got everything to work fully. So it was not the router after all (but the prompt from the software to start with)! :o