Auto Select Currency

We have purchased your Plugin WooCommerce Multi Currency – Currency Switcher

We have set it up in website https://admark.aicouncil.org

We are facing two problems –
1. After adding many currencies, I am not able to add further.
2. Under Location tab in admin, when I set –
Auto Detect = Auto Select Currency
Geo API = Woocommerce
Currency by Country = True
and then Save, this information does not get saved.

Please guide me how to proceed.