LAPONIE, welcome to FT and the A3 forum.
We have a fairly long running thread on use of and retro-claim procedures with the upgrade coupons, which you'll find here:
http://www.flyertalk.com/forum/aegea...e-coupons.html
Take a look through that - it should answer your query and possibly any other questions that arise - but basically you don't have a problem but you'll have to call A3 to get this resolved. Good luck!
To avoid too many responses which might end up splitting the information, I'll close this thread down. If you have any more queries, feel free to post them in our original discussion, and I'm sure they'll get answered.