I placed a request to change the home currency but it hasn't been confirmed. Why?

We have restricted making changes to the home currency because it affects the existing records. This is what happens when we change the home currency:

The currency of the existing records will be set to the new Home currency (say USD). The existing currency values will not be converted, just assigned with the new Home currency.
The configured currencies will be deleted and only the new home currency (USD) will be available. Since the exchange rates are defined based on the home currency, changing the home currency makes those exchange rates invalid.
If you accept these conditions, please confirm if you're referring to your Zoho CRM account. If yes, send us the confirmation email to support@zohocrm.com from the primary email address of your Zoho CRM account. We will activate multi-currency and you can go ahead and change your home currency.