Can you share a few links so we can check as well?
You can also check out:
- GitHub - Ellpeck/ObsidianCustomFrames: An Obsidian plugin that turns web apps into panes using iframes with custom styling. Also comes with presets for Google Keep, Todoist and more.
- GitHub - PKM-er/Obsidian-Surfing: An Obsidian plugin that lets you browse the web within Obsidian.
- GitHub - nguyenvanduocit/obsidian-open-gate: Empower your Obsidian notes with seamless web integration.
to see if any of those work with the sites you are trying to embed.