I just downloaded & installed the latest version on Win 10. I love how connecting to gmail & importing my old calendar & other data from Outlook went so effortlessly. I also love how the the look & feel is mostly identical to Outlook.
This is the way that software should work!
I would recommend, however, that you update your web site to avoid using orange for your text color. Orange lettering on a white background is very hard to see for us old baby-boomers!