I understand your frustration. Lets try to work through this, I’m pretty good at connections by now. It most likely is the RSA Encryption Key that is blocking your connection This went into effect in 2019 and if so you can blame the EU and US Regulations.
What watches do you have? What version of GWD do you have? Is your computer a Mac or Windows? Does your computer have a firewall? Did you try SDBoverBT?
Where does it not connect does it fail to see the watch or does it see the watch but not connect?
Ron
Samsung Developer Program