UPDATE: Lookback is no longer integrated into the InVision app on iOS. Instead, please use our new prototype flow.
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The latest version of the InVision app now supports deep links to open the upload debug menu. Take the following link:
invisionapp://projects.invisionapp.com/deeplink_support?lookbacktoken=[Lookback token]
and replace the [Lookback token] with your SDK token. For directions on finding your SDK token, read here.
Once you’ve inserted your SDK token into the link above, send the link to the device you’re trying to upload from, and open it. This should show you how far each upload has progressed.