When attaching a file on one device and opening Saga on another device (e.g. desktop to mobile), I receive an error for all attached files:

<Error>

<Code>MissingKey</Code>

<Message>Missing Key-Pair-Id query parameter or cookie value</Message>

</Error>

The URL looks right:

https://secure-content.saga.so/spaces/{the page UUID}/{file name}

Works fine on the machine that uploaded the file, but no dice anywhere else. I'm assuming there's a client ID or something in there. The same account is loading on each device, which is leading me to think it's physical device specific.