Welcome to the community! We're sorry to hear about this. Could you please let us know which platform you are using? Is it desktop or mobile? If you are on a mobile platform, did you try signing out and signing back in again to check if that helps?
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Hi @Ulrike321038389vbe, Jessica_9163! Can you please confirm what video resolution you're selecting when downloading the video project? We'd also like to know the workflow you're following while creating the project. Are you adding any audio to it, and are you uploading media from your device?
Also, I tried creating a project using the Adobe stock video and audio, resizing it to 960x1200, and exporting it with Custom, 1080p, and 4K video resolution, and it seems to work fine!
Can you share a screen recording of the workflow? Would you be willing to share the project with edit access to us privately so we can also test it there?
Thanks for the additional information @Ulrike321038389vbe. Can you provide the project URL so we can test it? You can share it via our community DM so it isn't visible to other community users, and we can then request edit access to the project from our test account.