Hi there,
Thanks for reaching us, and apologies for the frustration.
I tried to replicate this, but it worked fine for me, I got the project saved in my camera roll, and the download option was available.
Would you mind sharing the screenshot of the app interface where the download option used to appear (Top Right side)? Also, could you please share the mobile app and iOS versions on your device? Please ensure both the app and iOS are updated. You may also try reinstalling the app and restarting the device once to check if that makes any difference.
Let us know about your observations; we are here to help.
Regards
Amitej.