[World of Tanks] Micropatch 0.9.18_1

dance210: Attention Tankers! There are plans to release Micropatch 0.9.18_1 on April 21, 2017 Maintenance will begin at 03:30 Pacific Time (10:30 UTC) and will last approximately one half hour. During maintenance, the World of Tanks servers will be unavailable. Patch notes:Fixed the issue where the account’s statistics were not properly updated in the Stronghold mode. Fixed the issue where the top gun could not be researched upon conversion for the WZ-131. Fixed the issue where the Ru 251 could not be researched and purchased. Fixed the issue where the player did not receive any refund for the removed permanent customization elements purchased before update 8.11.