Two questions: I want to get away from MS office, it has a bad learning curve and, if you don’t use it enough, there Tabs, that you have to remember where the function is you need. Also besides the cost. I want to Donate some money to Libre, but I want to be assured that they won’t turn there Office into looking like MS Office with tabs and the bad learning curve.
Also can you send the money directly to their address in Germany? No Pay Pal or credit cards.
Thanks
Actually, there are two questions in your post, which is not really a good practice. 
Next time, you should try and split them. About the donation, manj_k is right, the donations page is the place to go.
Concerning the evolution of LO design, a similar question has been raised a few months ago. You should read the answer.