@heromed BTW - If you like GUI-O app, please consider leaving a review on Google Play Store. 
Thanks.
Kl3m3n
@heromed BTW - If you like GUI-O app, please consider leaving a review on Google Play Store. 
Thanks.
Kl3m3n
@heromed Hi!
No offense taken regarding the current design tool. I strongly agree that it is not very user friendly... 
The initial plan was to introduce a simple designer, which would then gradually "grow" into a more capable, user friendly graphical editor.
But, maintaining the GUI-O app (and basically everything else related to GUI-O), I never got this far. It is not a simple project anyhow.
To answer your questions:
It is definitely worthwhile from GUI-O perspective as it would surely be a significantly more friendly tool to create layouts. From my point of view, I see no problem if you license the editor as a FreeWare.
I only see one problem if you go ahead with this - almost all widgets are custom (low-level paint operations), which means all the logic is implemented in the GUI-O. So in order to create an editor that will be 1:1 compatible with GUI-O, you would need to re-implement the widgets exactly... Ideally, the codebase for the widgets should be the same (e.g., shared between the GUI-O app and the editor).
I am sure you understand I cannot share the source code for this as this is one of the main features of GUI-O.
Can you share a brief overview on how would you implement the editor? So we can discuss this further. 
P.S.: Which app did you develop? Can I download it from Google Play Store?
Best regards,
Kl3m3n
@heromed Hi.
Does the Python client run locally?
If it does, it may bypass some network or security restrictions, which could explain why it works. I still think this could be some Windows misconfiguration. Do you have any antivirus or endpoint security software running that might be blocking incoming connections?
Best regards,
Kl3m3n
@Vladì Hi.
Did you install the GUI-O from the same account (are there any other accounts on the tablet)?
Try this one by one...
Please tell me how this goes.
Best regards,
Kl3m3n
@Vladì Hi!
The license is tied to the Google account, so if you are using the same account on your tablet, it should work.
Regards,
Kl3m3n
@heromed Hi,
Q0 error means that the connection was refused. This error probably comes from the TCP transport layer. The server application did not accept the connection at the socket level due to some reason (wrong port or wrong address family)...
Can you try using another app (just to test) to try connect to GUI-O designer tool. For example:
https://play.google.com/store/apps/details?id=com.sollae.eztcpclient
Regards.
Kl3m3n
@heromed Hi!
I assume you followed the instructions here:
https://www.gui-o.com/design-tool#h.l8bfgce9xopc
Did you provide the IP address of the Wireless adapter (not for example Ethernet adapter)? In my case:

Also - is your firewall blocking the designer app?
Best regards,
Kl3m3n
If GUI-O has helped your projects or saved you time, you can optionally support its continued development.
Support is completely optional. Using GUI-O does not require any contribution.
Thank you to everyone who uses, tests, reports issues, or shares feedback - this support already means a lot.
@richamar Hi!
That's good to hear.
You can send messages in chunks if you want to, as GUI-O will process the command only when it receives "newline" character ('\n').
Best regards,
Kl3m3n