@lgeorgiev Please try out this version and report back how it works out for you. This version fixes several issues with serial devices due to various technical issues in the binding. We have received really good feedback now, especially on non-windows platforms, and I hope it works for you too as well.
The configuration should be compatible with the official version.
If it does not work with the new version, can you please enable debug level logging (logback_debug.xml), and start the openhab using start_debug.sh.
If the new version works for you, I would appreciate that you report your experiences in the pull request and here.