Score! I finally found a solution. At myetherwallet.com, it's possible to generate a new wallet from an encrypted private key as long as you have the password. Then I just downloaded the new json wallet file to .expanse/keystore and a new account showed up in the expanse wallet containing my EXP coins from the paper wallet.
FEE 0%, payment every 30 minutes, the minimum payment is 1 etc
The increased difficulty the work issued for the effective mining.
DDOS protected servers
Real time PPLNS payout scheme
Ethereum miners supported (Claymore, Genoil and others.)
Fast ping to Europe
Efficient mining engine, low uncle rates
We pay all Ethereum rewards (Blocks, Uncles & Fees)
Detailed global and miner statistics
Round the clock tech support: firstname.lastname@example.org
ICQ - 4741020
SKYPE - teldram
helpdesk (in progress ...)
or in the forum thread.