You need at least Internet Explorer 10, or you may want to give Firefox or Chrome a try.
Hello and welcome back, a good portrait!
I really hoped that some of our long term users will come back when the site has been modernized, it's great to see that it becomes real.
Hope you enjoy the new stuff, there have been a lot of changes/improvements to the site and the tools since then ...
EDIT: I have seen on your profile that you are from Spain, probably you like the recently added spanish version of QueekyPaint. You can switch the language to spanish in QueekyPaint using "Help -> Languages -> Español"
Thank you for the welcome I'm liking a lot the new tools and the new interface. It's a great improvement!