Family sharing in different countries and not being able to access App store in home country
I have Family sharing turned on, with my daughter in Australia being the organiser. However, I cannot update some of my apps e.g. O2 priority - I receive an error message saying "This is not available in your region"
I've tried going to Settings as described in another thread, and going to iTunes / app store, but there is no option to change store, for example to a UK store.
It seems as thought because I have family sharing with my Organiser daughter being in Australia, I cannot access the UK App store. Is this correct? If not, how to I change my own settings to a UK store?