Hi Slav, Congratulations on your new machine.
Unfortunately, not too many people have had success with the Type3. We are led to believe it is an older version which can be buggy.
You could make your learning curve a whole lot easier by using Vectric Software. It is easy to learn and use. You can even do a free trial. Cut 2D from Vectric is low cost at only 125 Euro, and would be an excellent starter Software for you. Vectric even have a Forum for users.
The Post Processor that we use with Vectric is G-Code Arcs (mm) (.tap)