diff --git a/src/components/Consultations/ConsultationCard/JitsyMeeting/index.tsx b/src/components/Consultations/ConsultationCard/JitsyMeeting/index.tsx
index 233459b9..f7882b6c 100644
--- a/src/components/Consultations/ConsultationCard/JitsyMeeting/index.tsx
+++ b/src/components/Consultations/ConsultationCard/JitsyMeeting/index.tsx
@@ -204,7 +204,7 @@ const JitsyMeeting: React.FC<JitsyMeetingProps> = ({
         if (blob) {
           const screenshotPayload = {
             dataURL: blob,
-            timestamp: Date.now(),
+            timestamp: new Date().toISOString(),
             userID: userId,
           };
 
@@ -237,7 +237,7 @@ const JitsyMeeting: React.FC<JitsyMeetingProps> = ({
             screenshots: [
               {
                 dataURL: blob,
-                timestamp: Date.now(),
+                timestamp: new Date().toISOString(),
                 userID: userId,
               },
             ],
diff --git a/src/components/MeetingAnalyticsOverlay/MeetingAnalyticsOverlay.tsx b/src/components/MeetingAnalyticsOverlay/MeetingAnalyticsOverlay.tsx
index 3ae275bd..856b44e6 100644
--- a/src/components/MeetingAnalyticsOverlay/MeetingAnalyticsOverlay.tsx
+++ b/src/components/MeetingAnalyticsOverlay/MeetingAnalyticsOverlay.tsx
@@ -256,7 +256,7 @@ export default function MeetingAnalyticsOverlay({
               }
             >
               <BigEmoji>{currentEmot.icon}</BigEmoji>
-              <Value>{currentEmot.val}%</Value>
+              <Value>{currentEmot.val ? `${currentEmot.val}%` : "-"}</Value>
             </StatCard>
             <StatCard
               active={hoveredPanel === "attention"}
@@ -291,7 +291,7 @@ export default function MeetingAnalyticsOverlay({
                 </ResponsiveContainer>
               </MiniChartBox>
               <Value style={{ color: getColorByValue(latestAtt) }}>
-                {latestAtt}%
+                {latestAtt ? `${latestAtt}%` : "-"}
               </Value>
             </StatCard>
           </StatsWrapper>
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 24790420..732076d1 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -387,7 +387,7 @@ export const relativeTimeFormatter = new Intl.RelativeTimeFormat("pl", {
   style: "short",
 });
 
-export const getDateParts = (timestamp: number) => {
+export const getDateParts = (timestamp: string) => {
   const date = new Date(timestamp);
   const pad = (n: number) => n.toString().padStart(2, "0");
 
diff --git a/src/workers/saveImageWorker.ts b/src/workers/saveImageWorker.ts
index e4881c94..c495840c 100644
--- a/src/workers/saveImageWorker.ts
+++ b/src/workers/saveImageWorker.ts
@@ -4,7 +4,7 @@ export {};
 
 export interface Screenshot {
   dataURL: Blob;
-  timestamp: number;
+  timestamp: string;
   userID: number;
 }
 
@@ -48,11 +48,6 @@ function getFormattedFilename(screenshot: Screenshot, modelId: number): string {
   return `${screenshot.userID}_${modelId}_${ts}.webp`;
 }
 
-const formatToSQL = (timestamp: number) => {
-  const p = getDateParts(timestamp);
-  return `${p.yy}-${p.mm}-${p.dd} ${p.hh}:${p.mi}:${p.ss}`;
-};
-
 self.onmessage = async (event: MessageEvent<SaveImagesMessage>) => {
   if (event.data.apiUrl) {
     API_URL = event.data.apiUrl;
@@ -82,7 +77,7 @@ self.onmessage = async (event: MessageEvent<SaveImagesMessage>) => {
         const filename = getFormattedFilename(s, modelId);
         const file = new File([s.dataURL], filename, { type: "image/webp" });
         formData.append(`files[${index}][file]`, file, filename);
-        formData.append(`files[${index}][timestamp]`, formatToSQL(s.timestamp));
+        formData.append(`files[${index}][timestamp]`, s.timestamp);
       });
 
       const response = await fetch(