Hi
It looks you have too many ports and BlueSoleil mixed them up. Unfortunately this is no WCL bug but BlueSoleil bug and the only way to fix it completly delete BS, remove all vCOMs, reset its counter and install BS once again. Just installed BS creates 2 or 3 vCOMs.
"Service not found" means that your device does not have DUN service.
P.S.: On your screenshort I can see two identical ports with number 8 and two COMs with number 3