purchising

You have to save your billing information to your Origin account before you purchase any new products. After you do this log out of Origin and log back in - it should do the trick.
In case if you don't know how to save billing information: Open Origin, choose Origin tab and choose Account Privacy from the list. After that press Payment and Shipping and add your billing information.

If the method I wrote here fails and/or you don't get these 5 Euro back in the next few days, you will have to contact EA Support. Here is how you do it:

1 Click on the following link https://help.ea.com/en/origin
2 Choose Billing/Purchasing from the issue list
3 Go to Contact us button at the bottom of the page
4 Select the platform you play on
5 Describe your issue in Please tell us a bit more about your issue
6 Select a contact option. Note that you may get different contact options depending on your country.

Same old thing... Thanks for your idea though ☹️

I've tried to save my credit card informations in there it said 

Your request could not be processed

We are unable to verify this credit card

And for Ea support I've send them 3 messages 2 days ago I still havent recieved any response from them... 

I tried one more time I could continue to payment in very first step then I encounter an error with a refference 10048, which means that I should check my information details. I'll drive me crazyy !!