If memory serves, I was having trouble exporting a psbt file (so that I could sign it from within sparrow wallet). First, trying to communicate with sparrow via QR wasn't working; but, I couldn't tell if that was a problem with Cove, Sparrow, or me. So, I tried exporting the psbt file instead (to either Signal or the iPhone Files app) so that I could then import into Sparrow; but Cove failed to export the file to either. To be clear, this was all just in testing, so to say I'm "missing" this specific functionality would probably be a bit of an overstatement... but it seems like basic enough functionality that I lost interest in trying to find out what else I could break. I do look forward to giving a thorough beating to the next iteration, though, as long as it seems like it's up to the task. 😉