For your information: The upgrade to Plus is temporarily free, meaning that mobile passes bought with the free plus upgrade are fully refundable.
![](https://uploads-eu-west-1.insided.com/eurail-en/attachment/54ac241a-b2b5-489f-bb01-65cc950e7c25.jpg)
Normally, the plus upgrade is not refundable, so this is a good opportunity if you are not yet 100% sure of your plans (personally find the statement "100% refund" to be confusing)