Export LR Mobile (iPad) to Shutterfly

Hi everybody. I am new to using LR on an iPad and would like to export my photos directly to Shutterfly but I can't get it to show as an option in the share sheet. I have found that I can save to my camera roll and it auto-syncs to my Shutterfly but then this is taking up memory on my iPad and I'm trying to keep it clean as possible so it doesn't get bogged down. I'm even open to trying another photo app that I could export directly to and make albums to order. Thank you for any suggestions!