When attempting to visit the image hosting website catbox.moe, Summit does not recognize the url as it considers the link a community.

For example, if you try to visit my album by clicking the url in the app it won't work. If you open in incognito it will work.

https://Lemmy.blahaj.zone/post/1310587

https://catbox.moe/c/rk6abk

I'm not sure if this helps, but the Thunder app has the same issue and I submitted the issue to their community a few weeks back. Here is the GitHub ticket with how they fixed it.