diff --git a/BaseFilter/sections/allowlist_stealth.txt b/BaseFilter/sections/allowlist_stealth.txt
index 30c58531230..bb0660700b7 100644
--- a/BaseFilter/sections/allowlist_stealth.txt
+++ b/BaseFilter/sections/allowlist_stealth.txt
@@ -24,6 +24,8 @@
 !#########################################
 !
 !
+! https://github.com/AdguardTeam/AdguardFilters/issues/212270
+@@||embed.wcostream.com^$subdocument,stealth=referrer
 ! https://github.com/AdguardTeam/AdguardFilters/issues/212149
 @@||lamoda.ru^$stealth=1p-cookie
 ! https://github.com/AdguardTeam/AdguardFilters/issues/211844
diff --git a/BaseFilter/sections/antiadblock.txt b/BaseFilter/sections/antiadblock.txt
index 0cef005e293..77e1e82d38b 100644
--- a/BaseFilter/sections/antiadblock.txt
+++ b/BaseFilter/sections/antiadblock.txt
@@ -6744,6 +6744,9 @@ streamta.*#@#.google-ad
 ! https://github.com/AdguardTeam/AdguardFilters/issues/210238
 embed.wcostream.com###announcement
 embed.wcostream.com##.announcement-backdrop
+||embed.wcostream.com^$replace=/if \(closeBtn\.disabled\) return;//,subdocument,document
+||embed.wcostream.com^$replace=/hideAll\(\);/hideAll();try{if(typeof doClose==="function"){doClose();}}catch(e){};/,subdocument,document
+||embed.wcostream.com^$replace=/const MAX_CLOSES = \d+;/const MAX_CLOSES = 0;/,subdocument,document
 embed.wcostream.com#%#//scriptlet('trusted-replace-node-text', 'script', 'MAX_CLOSES', 'if (closeBtn.disabled) return;', '')
 embed.wcostream.com#%#//scriptlet('trusted-replace-node-text', 'script', 'MAX_CLOSES', '/hideAll\(\);/g', 'hideAll();try{if(typeof doClose==="function"){doClose();}}catch(e){};')
 embed.wcostream.com#%#//scriptlet('trusted-replace-node-text', 'script', 'MAX_CLOSES', '/const MAX_CLOSES = \d+;/', 'const MAX_CLOSES = 0;')