Xcode App Store Preview, can App Store Preview Video have watermark on the video? - app-store-connect

I am currently preparing my app on App Store Connect. I have made the preview video for my app, but the resolutions don't match, so I used a website to change the resolution, however it comes with a watermark on the bottom right hand corner. Will Apple allow this? Or will they reject if they see a watermark?
Thanks

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Agora Web RTC SDK video zoomed in and back camera is not being mirrored on mobile browser

I am using Agora Web RTC SDK to implement a live stream scenario. The video is being zoomed in automatically and on a mobile browser the back camera is not being mirrored.
I have tried setting up the videoEncoder when creating video camera track using createCameraVideoTrack as following.
encoderConfig: {
encoderConfig: '720p_1'
}
But not getting anywhere. The video is mirrored on remote viewer's screen and aspect ratio is all messed up.
Can someone help. Please

html5 app freezes in ios13 after navigating to an external url in in-app standalone safari browser and back

Issue
My web application built using nuxt and installed as web app on iphone becomes unresponsive after I open or visit an external link from the app. Issue specifically comes iOS 13.4 and above on real devices. Simulators works fine.
Devices
iPhone X and XI (all versions) with iOS 13.4 and above
Steps to reproduce
Open url https://nuxt-min-pwa.netlify.app/ in safari.
Tap on share icon and then add to home screen.
Open app from home screen.
Tap on menu icon.
Tap on second.
Tap on link named ICE.
App will open an external url.
Tap on Back to App button to return to the app.
Tap on second now.
App does not responds. A thin loading bar seems to be in progress, everytime second is tapped. But nothing else happens.
Web app is working fine in iphone8 with ios 13.3.1 and Xcode simulators. There is a similar issue reported on both stack overflow and apple developer forum. Although it specifically mentions microsoft openid, but I am sure, issue comes up with any external url.
PWA freezing on navigation clicks in Safari iOS (13.5) after OpenID Microsoft sign in
https://developer.apple.com/forums/thread/649699
Source code for app
https://github.com/appsbuddha/minimal-nuxt-pwa

Native way to inform user there is a mobile app?

Often when viewing a website on a mobile device you'll get a notification that a mobile app is available, or if you already have the app downloaded you'll have the option to open the URL in the app.
Is there a native way to do this or are these notifications always custom?
When users click on a link or download a file and the suggestion pops up to open the respective app, that's called deep linking. iOS labels it as Universal Links and Android uses App Links.

VB.NET Web Browser Youtube full screen not working

I have been working on a simulation of windows 11, and it works, pretty well, but I added a web browser so you can browse the web and whenever i clicked on full screen mode on youtube, the video still shown, but the full screen part was all black.
This is the video fullscreen
Anyone have any idea how to fix this? I have been searching the web for it and I can't find anything.

itunes connect metadata rejected video third party, how to resolve?

I uploaded my app to itunes connect and I waited a few days.. and then the app that I uploaded was denied one time. I send them one video explaining the app, but anyway they rejected the app.
This is the first message:
We began the review of your app but are still not able to continue because we need access to a video that demonstrates your app in use when launched on the physical device and integrating with third party product. Please showcase all app features and functionality within the video content provided. The simulation video provided will not suffice.
This is the second message:
The simulation video provided will not suffice. We need access to a video that demonstrates your app in use when launched on the physical device, and integrating with the third party product. Please showcase all app features and functionality within the video content provided.
What do I need to do? Use a screen capture software and film my app in use in the iPhone? Upload to youtube and share the link in the review notes of the app? A simple demonstration? or a expanded demonstration?