diff --git a/static/bidder-info/amx.yaml b/static/bidder-info/amx.yaml
index 3ede0d0875f..7ab3cadf304 100644
--- a/static/bidder-info/amx.yaml
+++ b/static/bidder-info/amx.yaml
@@ -14,7 +14,12 @@ capabilities:
       - video
       - native
 userSync:
+  iframe:
+    url: "https://prebid.a-mo.net/isyn?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&gpp={{.GPP}}&gpp_sid={{.GPPSID}}&s=pbs&cb={{.RedirectURL}}"
+    userMacro: "$UID"
   redirect:
-    url: "https://prebid.a-mo.net/cchain/0?gdpr={{.GDPR}}&us_privacy={{.USPrivacy}}&cb={{.RedirectURL}}"
-    userMacro: ""
-
+    url: "https://prebid.a-mo.net/cchain/0?gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&us_privacy={{.USPrivacy}}&gpp={{.GPP}}&gpp_sid={{.GPPSID}}&s=pbs&cb={{.RedirectURL}}"
+    userMacro: "$UID"
+endpointCompression: GZIP
+openrtb:
+  gpp-supported: true