Issues with the Plugin

We needed help with three different issues we were hoping you could help us with:

1. There is a way to show the user’s country’s currency in the second line of the Price along with “Approximately:” written before it. But when we change the currency using the selector, the price in the first line which was showing the default price changes instead of the price shown with approximately.
2. We want to show the user the price in the currency they have selected in on the checkout page, but since they will be paying the amount in our country’s currency, we also want to show a second line which will show the price in the default currency and with a suffix that can be changed, where we were thinking of mentioning (“This is what you will be paying for the selected items”).
3. We want the exchange rate to be updated by the market’s exchange rate but we also want to add a percentage fee on it, so we do not have to change the price everyday.

Can you please help us with a fix for these?