Source: http://wg-news.com/wot-pc-zeitpunkt-der-rueckerstattung-fuer-den-wz-111/

Thanks to Eikarrramba for this one.

Just a quick update from the EU server. There are people, who bought the WZ-111 mission tokens, but they then played and finished the missions by themselves. Please be aware that if that happened, you will get 2500 gold as a compensation for each such token. These will be awarded – according to the WG EU staff, cited in the post above – early next week (eg. cca 26.1.-27.1.)