To address the issue of the FlyLadyPlus app not retaining changes when you rename tasks after upgrading to a paid subscription, follow these steps:

1. Check App Updates: Ensure that you are using the latest version of the FlyLadyPlus app. Updates often fix bugs and improve performance. You can check for updates in the App Store on your Mac.

2. Restart the App: Close the FlyLadyPlus app completely and then reopen it. This can refresh the app and may help in retaining the changes you make.

3. Proper Renaming Process: When renaming a task:
- Tap the pencil icon next to the task title.
- Enter the new name and ensure to save the changes by tapping 'Done' or the equivalent save option.

4. Test with a New Task: Try creating a new task and renaming it to see if the app retains the new name. This will help determine if the issue is specific to existing tasks.

5. Clear Cache: Sometimes, clearing the cache of the app may help resolve performance issues. Go to your app settings, find the option to clear cache or temporary files, and confirm.

6. Contact Support: If the above steps do not resolve the issue, consider reaching out to FlyLadyPlus support. You can inquire if there are known issues with retention of task changes or if there are specific settings affecting your experience.

7. User Community: You might also want to check forums like Reddit or the official FlyLady community where other users may have experienced similar issues and might have shared their solutions.

If these measures do not resolve the issue, it could be helpful to look into your subscription status as sometimes transactional errors can affect app functionality. Observing how the app performs after trying these steps may lead to a better understanding of the root cause.

For visual guidance on how to use the app effectively, consider watching tutorial videos available on platforms like YouTube, which might provide additional tips on task management within the FlyLadyPlus app - learn more - learn more.