There could be a few reasons why you're unable to connect to the AWS Cloud9 IDE using Safari. Try these troubleshooting tips:
-First, check that your Safari browser is up to date. You can do this by opening the Safari menu and selecting "About Safari." If a new version of Safari is available, follow the prompts to update.
-Next, try clearing your Safari browser's cache. You can do this by going to the Safari menu and selecting "Preferences," then "Advanced," and finally "Show Develop menu in menu bar." Once the Develop menu is visible, select "Develop" followed by "Empty Caches."
-If you're still having trouble connecting, try using a different browser. The AWS Cloud9 IDE is compatible with Google Chrome, Mozilla Firefox, and Microsoft Edge, in addition to Safari.
If you continue to have trouble connecting to the AWS Cloud9 IDE after trying these troubleshooting tips, please reach out to AWS Support for assistance.