It will be difficult to help you without checking how your data is setup.
Is it possible to share an anonymised workbook or just workbook with a small subset of your data
Confusing! Sample .twbx will help to provide the answer quickly.
No sorry, If it was possible to share the workbook (clients privacy) I already would have shared it.
Maybe you could give some hints on were you would be looking?
I already double checked on spelling, use of aliases/renamed, which makes sense as the Location filter does work on individual level but not when used next to the other 2 filters.
Edit: I just noticed that when I remove the Location filter one of the other filters is no longer working.
Found the solution there was a field with the same name as one of the filters meaning it triggered both fields to filter my workbook.
I only found it when I figured out I could also use the online edit function together with the url that set off the filters.
Thanks for your time.