I'm plannig to stay three days in France and then three days in Spain. If I buy $19 Prepay roaming add-on while in France will I be able continue to use it when move to Spain or would I have to buy another one?
No need. You can use your roaming add on to france going to spain since the both countries are belongs to one zone only. Just kindly make sure that you have enough entitlements for your roaming add on to use it. Cheers!
Could the Prepay romaing FAQ/info be updated to make this more clear? At the moment it's totally ambiguous whether Prepay roaming is valid for only one country or every country you visit during the paid-for time period, and you get some alarming texts when you change country about casual roaming rates which imply that it's only valid for the original country you did the roaming purchase in.