Windows 10. Finale 26.

I would need to contact the creators of finale 26 directly. I think there is an error in the operation of two tools: Articulation Tool and Expression Tool. Sometimes I cannot drag by clicking with the left mouse button on the selection square. When I try to do so, the item I try to drag disappears. It does not allow me to drag the selected item. It also does not work in combination with the cursor arrows. That way I cannot work, because both tools are essential for the work I am doing. When buying Finale 26, I did not expect to encounter this error, which does not allow me to advance in my work. Will the copy of Finale sent to me have a fault? Do you know of someone who has had the same problem as me? How could I solve the problem? It is very unpleasant to spend so much money on a program and discover that it does not work as expected. Please help me, because my situation is desperate. Thank you. I hope I can count on your help. I am a little disappointed.