Q: App Store Can ont match adresse and Zip Then no way do download even free apps

HI

my IPhone and IPad were purchased in US

but am using them in Cameroon

today am trying to download free Apps from app storm

the system want to verify my address , unfortunately I can not set a cameroon address

only us addresses are given to select

And the setting can not be completed thus I can't download anything

please for help as I urgently need anti virus

thanks