v.4.3 Cant see my decks but i can use them

hello everyone.

i updated rekordbox dj today from 4.25 to 4.3 after i open the program but it doesnt work the program doesnt gave a response. Then i delete the pioneer folder in the roaming and copy my license back into it. Now i can open the program but i dont the my decks and all the other features sometimes after a long time they appear. I only see the track list. The weird thing is that i can you my DDJ RB and load tracks and paly them use effects everythings works but i dont see what i am doing.

Pls help me i dont know what to do...