This version features required changes for the Exchange Rate functionality; the old API has been shut down, and absorbed into the APILayer family of products.
After installing the update, you'll find a new setting in the XenForo Options for this add-on: Exchange Rate API Key. In order for your exchange rates to update automatically, an API key is required. Please click here and sign up using the "FREE" tier to obtain your API key.
After signing up, enter the Access Key you receive into the "Exchange Rate API Key" field.
Complete Change Log
Change: Updated Exchange Rate fetcher to support the new API format