My browser / operating system: Windows 7, Chrome 62.0.3202.94, Flash 27.0 (release 0)
I will create project but: Change not saved; network not connecting. Trying again in (countdown)…
Can someone fix?

Duplicate of a duplicate of a duplicate of a duplicate of a duplicate of a duplicate of a duplicate of a duplicate of a duplicate of a duplicate. . (one of the posts is yours, I posted this on all of the duplicates.

You will see this error when there are issues with networking - either on your end or on ours. Recently, it was on our end. Hopefully, it is now fixed