Blank settings

Those notices at the top of your screen could be causing problems – I’ve never seen them before – are they from the theme? You may want to switch that to see if its breaking things.

Yes, they are from the theme.
Also, this problem has been solved by deactivating my other plugin called “All Currencies for WooCommerce”.

However, I am having problems with my current currency (AED) to convert upon checking out to USD. Since AED is not supported by PayPal.

As of now, I cannot activate PayPal on WooCommerce, it says that the Gateway is disabled since my currency is not supported. I’m looking for solutions.

https://www.ads-software.com/plugins/woocommerce-all-currencies/ is 6 months old so it’s likely not updated for compatibility. I’m aware of this one for PP standard https://www.ads-software.com/plugins/paypal-currency-converter-basic-for-woocommerce/faq/