Even if there isn't a glitch this coming Monday the 9th, as there was back on the 2nd which cut ten hours off the final Invasion mode weekend, there is another potential issue that may have been overlooked.
Westwall, and the final Attrition weekend of the event, should end at [Noon Pacific - 1PM Mountain - 2PM Central - 3PM Eastern - 8PM Greenwich] for the NA server.
Provided there is not another bugged server reset, at those times the event should/will lockout any further progress on the missions - including the ability to spend certificates for uncompleted tasks.
However, going by the past two weekends, certificate awards for the personal points contest will take between twenty to thirty minutes after end time of the event before being finalized and distributed.
Unless Wargaming makes some kind of a specific change any certificates earned by placing in the various brackets of the contest will be unusable towards purchasing either of the event planes.
There has been an indication that unused certificates might be redeemed for some amount of in-game gold, but no firm commitment to that outcome either.
Edited by Soylent_Red_Isnt_People, 06 April 2018 - 06:02 PM.