I do not know how to fix this problem.
There have been a lot of reports of problems with the Arduino Web Editor over the last couple of days so it's likely not a problem on your end.
A workaround could be to use the real Arduino IDE (unless you are using Chrome OS) until the Arduino Web Editor is fixed. You can download the Arduino IDE for free here:
For future reference, there is a forum section dedicated to the Arduino Web Editor (AKA Arduino Create):
http://forum.arduino.cc/index.php?board=101.0
where people knowledgeable on this topic are more likely to see your post. I have requested this thread be moved there.
Hi @ThatWHound,
are you on chromeOS? you need to buy a license to use the plugin on chromeOS, please follow the getting started wizard Arduino Cloud - Getting started