The currency displayed on your on price tags of your offers depends on the country of your Account registration. If you are seeing a currency other than the one of your country, please follow these steps:
1. Check your selected Facebook account currency by going to Settings --> Payments --> Account Settings tab --> Preferences (Currency section).
2. If it differs from your country's currency, change it to the one you'd like to see.
If this doesn't help, then you are probably using a VPN that marks your IP address as belonging to a country using this currency. Please consider switching the VPN off or disabling any proxy server connection in your browser.
If none of the above helped, please contact our Support Team using the in-game Support interface.