diff --git a/src/submission/ThumbnailComponent.tsx b/src/submission/ThumbnailComponent.tsx
index 483d14f..4c2f3ef 100644
--- a/src/submission/ThumbnailComponent.tsx
+++ b/src/submission/ThumbnailComponent.tsx
@@ -1,7 +1,7 @@
 import * as React from "react";
 import { drawCenteredToCanvas, renderThumbnail, setupPreRenderedThumbnail } from "../thumbnails/thumbnailRenderer";
 import { waitFor } from "../../maze-utils/src"
-import { VideoID } from "../../maze-utils/src/video";
+import { getCurrentTime, verifyCurrentTime, VideoID } from "../../maze-utils/src/video";
 import { ThumbnailSubmission } from "../thumbnails/thumbnailData";
 import { logError } from "../utils/logger";
 import { isFirefoxOrSafari } from "../../maze-utils/src";
@@ -80,7 +80,7 @@ export const ThumbnailComponent = (props: ThumbnailComponentProps) => {
 
             if (props.type === ThumbnailType.SpecifiedTime) {
                 canvasRef.current?.getContext("2d")?.clearRect(0, 0, canvasRef.current?.width, canvasRef.current?.height);
-                if (props.video.paused && props.time === props.video.currentTime) {
+                if (props.video.paused && props.time === getCurrentTime()) {
                     // Skip rendering and just use existing video frame
                     renderCurrentFrame(props, canvasRef, inRenderingLoop, false, true);
                 } else {
@@ -115,11 +115,16 @@ export const ThumbnailComponent = (props: ThumbnailComponentProps) => {
                         if (submitted) return;
                         submitted = true;
 
+                        if (props.type === ThumbnailType.CurrentTime) {
+                            // To handle server-side ads
+                            verifyCurrentTime();
+                        }
+
                         props.onClick?.(props.type === ThumbnailType.Original ? {
                             original: true
                         } : {
                             original: false,
-                            timestamp: props.type === ThumbnailType.CurrentTime ? props.video.currentTime : props.time!
+                            timestamp: props.type === ThumbnailType.CurrentTime ? (getCurrentTime() || 0) : props.time!
                         });
                     }
 
diff --git a/src/submission/submitButton.tsx b/src/submission/submitButton.tsx
index 97136ab..ec59b81 100644
--- a/src/submission/submitButton.tsx
+++ b/src/submission/submitButton.tsx
@@ -2,7 +2,7 @@ import * as React from "react";
 import { createRoot, Root } from "react-dom/client";
 import { BrandingResult, replaceCurrentVideoBranding } from "../videoBranding/videoBranding";
 import { SubmissionComponent } from "./SubmissionComponent";
-import { getVideo, getVideoID, getYouTubeVideoID, isOnMobileYouTube } from "../../maze-utils/src/video";
+import { getVideo, getVideoID, getYouTubeVideoID, isCurrentTimeWrong, isOnMobileYouTube } from "../../maze-utils/src/video";
 import { log, logError } from "../utils/logger";
 import { TitleSubmission } from "../titles/titleData";
 import { ThumbnailSubmission } from "../thumbnails/thumbnailData";
@@ -222,6 +222,11 @@ export class SubmitButton {
             alert(chrome.i18n.getMessage("videoIDWrongWhenSubmittingError"));
             return false;
         }
+
+        if (isCurrentTimeWrong()) {
+            alert(chrome.i18n.getMessage("submissionFailedServerSideAds"));
+            return false;
+        }
         
         const result = await submitVideoBranding(getVideoID()!, title, thumbnail, false, actAsVip);