Ensure that the data relationships between your tables are correctly set up. Go to Model View and check how the tables are related. Make sure the relationships are correctly linked and use Single Direction filtering unless absolutely necessary.
If your Blue and Grey slicers filter out all available Country values, the Country Slicer may disappear.
Remove all slicer filters and check if the Country values appear again.
Go to Format then Edit Interactions and ensure that the Country Slicer is not being filtered by the Blue and Grey slicers.
Try selecting one value at a time in the Blue and Grey slicers and check if the Country Slicer disappears.
This will help you identify if one specific slicer is causing the issue.
If the problem persists, consider creating a separate lookup table for slicers to avoid unwanted filtering.
Hope my suggestion gives you good idea, if you have any more questions, please feel free to ask we are here to help you.
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