Have you also a current membership?
Add on's etc only work if in conjunction with a live 48 membership...
Check your Membership status when you log in... If expired, you will need to purchase a membership to use your EU add on's.
For what it's worth I was also in France for the past couple of weeks and had no problems with incoming and outgoing calls and texts. However I didn't buy any EU roaming add-ons because it's largely just as cost effective to just topup your credit balance and pay for incoming/outgoing calls and outgoing texts from that instead of buying the add-ons. (There's a small saving in outgoing calls with the add-on but it's really marginal) . I topped up by about a tenner and that got me through the trip. My girlfriend is also on 48 and things worked for her fine using the same cash credit topup approach.
Hope this helps.
Hi I am having the same issues. Cannot get internet, it just keeps looping to no service. I have tried literally EVERYTHING ! So I will be switching from 48 when I return home. Cannot put up with this nonsense. I am going to get a SIM card today. Luckily I have a dual sim phone.
Does this help at all?