Of course we will be able to trade again.
The new login campaign says it's for hitting 3m users, but, maybe that is the real compensation for the trade downtime.
I consider hiding rupees and having extra storage space for cards in unclaimed trades to be an exploit. There is just too many advantages to having multiple accounts right now.
I hope that they fix this during the downtime.
Seriously they have 3m+ accounts but I think 2m+ are multis.