UPDATE July 23 - I have heard reports from our support team that test mode is now working after clearing cache / cookies and doing a hard rest (ctrl + shift + R or cmd + shift + R on Mac). Please try this and let me know if it works for you!
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Hello all, our team is currently aware of an ongoing issue with Test Mode failing / taking a long time to load from time-to-time. Some things I've seen work for people include trying different browsers, and doing a hard refresh (Ctrl + Shift + R Cmd + Shift + R on Mac).
Our engineering team is working on a fix and also working on a more long-term solution, but in the meantime I wanted to share some alternatives to Test Mode. These alternatives are available if you are on a paid plan, since they involve downloading code.
Local Run
With local run, you can test your app on a device simulator. You'll first need to download the FlutterFlow desktop app, and then set up the software needed to run your project locally.
Here is the documentation on how to set up Local Run: https://docs.flutterflow.io/testing/local-run/
And here is a YouTube tutorial: https://www.youtube.com/watch?v=k9NpYncXC_U
VSCode Extension / Downloading your Code
Another way to test your project locally is to download your code through the VSCode extension or the FlutterFlow CLI, which can be found in the developer menu.
Here is the documentation on how to use the VSCode extension: https://docs.flutterflow.io/concepts/custom-code/vscode-extension/
As well as a YouTube tutorial: https://www.youtube.com/watch?v=H-Q9LYDMGNo
Here is a 6-min walkthrough on how I use these tools (local run & VSCode extension & downloading code): https://www.loom.com/share/cfc2f5d60aed4b9c87dbfb3b198cb793?sid=3c2ac2bb-f29c-4093-a212-e3d34390bbfc
I apologize on behalf of your team for the inconvenience and will update you all on the status of a fix. If you have any questions, please let me know!