Welcome to Thunkable! Your screenshots are not very high resolution so it’s hard to see them.
Troubleshooting Firebase can be time-consuming. One suggestion I have is to use a single text block for your object properties. Again, I can’t read what property values you’re using so let me give you an example:
If you need the property main → userId → name, instead of using three get property of object blocks with “main”, “userId”, and “name” in each one, just use a single `get property of object block with “main.userId.name” instead. It can also be used with arrays/lists. You can see an example here: API JSON Tutorial (Video) - #15 by tatiang.
Also, whenever you post Firebase data, be sure to post it as text and to format it using the </> button in the toolbar. That will remove smart quotes and allow others to copy and paste it into Redirecting to view it more easily.